HomeMy WebLinkAbout21-14 FloodplainSOUTH BEND ZONING ORDINANCE 14-1
Article 21-14:
Floodplain Sections
Section 21-14.01: Authority and Purpose .................14-1
Section 21-14.02: Definitions ............................14-3
Section 21-14.03: General Provisions ....................14-11
Section 21-14.04: Administration .......................14-13
Section 21-14.05: Flood Hazard Reduction ..............14-15
Section 21-14.06: Variance Procedures .................14-21
Section 21-14.01: Authority and Purpose
(a) Statutory Authority
The Indiana Legislature has in IC 36-7-4 granted the
power to local government units to control land use
within their jurisdictions. Therefore, the Common
Council does hereby adopt the following floodplain
management regulations.
(b) Findings of Fact
(1) The flood hazard areas of the City of South Bend,
Indiana are subject to periodic inundation which
results in loss of life and property, health and
safety hazards, disruption of commerce and
governmental services, extraordinary public
expenditures for flood protection and relief, and
impairment of the tax base, all of which adversely
affect the public health, safety, and general welfare.
(2) These flood losses are caused by the cumulative
effect of obstructions in floodplains causing
increases in flood heights and velocities, and by the
occupancy in flood hazard areas by uses vulnerable
to floods or hazardous to other lands which are
inadequately elevated, inadequately flood-proofed,
or otherwise unprotected from flood damages.
(c) Purpose of this Article
It is the purpose of this Article to promote the public
health, safety, and general welfare and to minimize
public and private losses due to flood conditions in
specific areas by provisions designed to:
(1) Restrict or prohibit uses which are dangerous to
health, safety, and property due to water or erosion
hazards, which result in damaging increases in
erosion or in flood heights or velocities;
(2) Require that uses vulnerable to floods, including
facilities which serve such uses, be protected
against flood damage at the time of initial
construction;
(3) Control the alteration of natural floodplains, stream
channels, and natural protective barriers which are
involved in the accommodation of flood waters;
(4) Control filling, grading, dredging, and other
development which may increase erosion or flood
damage;
(5) Prevent or regulate the construction of flood
barriers which will unnaturally divert floodwaters or
which may increase flood hazards to other lands;
and,
(6) Make federal flood insurance available for
structures and their contents in the City of South
Bend, Indiana by fulfilling the requirements of the
National Flood Insurance Program.
14-2 May 20, 2026
21-14.01 FlOODPlAIN
Authority and Purpose
(d) Objectives
The objectives of this Article are:
(1) To protect human life and health;
(2) To minimize expenditure of public money for costly
flood control projects;
(3) To minimize the need for rescue and relief efforts
associated with flooding and generally undertaken
at the expense of the general public;
(4) To minimize prolonged business interruptions;
(5) To minimize damage to public facilities and utilities
such as water and gas mains, electric, telephone,
and sewer lines, streets, and bridges located in
floodplains; and
(6) To help maintain a stable tax base by providing for
the sound use and development of flood prone
areas in such a manner as to minimize flood blight
areas.
(e) Severability
If any section, clause, sentence, or phrase of this Article
is held to be invalid or unconstitutional by any court
of competent jurisdiction, then said holding shall in no
way effect the validity of the remaining portions of this
Article.
SOUTH BEND ZONING ORDINANCE 14-3
FlOODPlAIN 21-14.02
Definitions
Section 21-14.02: Definitions
(a) Definitions
Unless specifically defined below, words or phrases
used in this Article shall be interpreted so as to give
them the meaning they have in common usage and
to give this Article its most reasonable application.
In addition to the definitions contained in Section
21-02.01, the following definitions shall apply to the
Floodplain Regulations of this Chapter.
(1) A zone means portions of the SFHA in which the
principal source of flooding is runoff from rainfall,
snowmelt, or a combination of both. In A zones,
floodwaters may move slowly or rapidly, but waves
are usually not a significant threat to buildings.
These areas are labeled as Zone A, Zone AE, Zones
A1-A30, Zone AO, Zone AH, Zone AR and Zone A99
on a FIRM. The definitions are presented below:
(A) Zone A. Areas subject to inundation by the 1
percent annual chance flood event. Because
detailed hydraulic analyses have not been
performed, no base flood elevation or depths
are shown.
(B) Zone AE and A1-A30. Areas subject to
inundation by the 1 percent annual chance
flood event determined by detailed methods.
Base flood elevations are shown within these
zones. (Zone AE is on new and revised maps in
place of Zones A1-A30).
(C) Zone AO. Areas subject to inundation by
1 percent annual chance shallow flooding
(usually sheet flow on sloping terrain) where
average depths are between 1 and 3 feet.
Average flood depths derived from detailed
hydraulic analyses are shown within this zone.
(D) Zone AH. Areas subject to inundation by
1 percent annual chance shallow flooding
(usually areas of ponding) where average
depths are between 1 and 3 feet. Average
flood depths derived from detailed hydraulic
analyses are shown within this zone.
(E) Zone AR. Areas that result from the
decertification of a previously accredited flood
protection system that is determined to be in
the process of being restored to provide base
flood protection.
(F) Zone A99. Areas subject to inundation by
the 1 percent annual chance flood event,
but which will ultimately be protected upon
completion of an under-construction Federal
flood protection system. These are areas of
special flood hazard where enough progress
has been made on the construction of a
protection system, such as dikes, dams, and
levees, to consider it complete for insurance
rating purposes. Zone A99 may only be
used when the flood protection system has
reached specified statutory progress toward
completion. No base flood elevations or depths
are shown.
(2) Accessory structure (appurtenant structure)
means a structure with a gross floor area 400
square feet or less that is located on the same
lot as the primary structure and the use of which
is incidental to the use of the primary structure.
Accessory structures should constitute a minimal
initial investment, may not be used for human
habitation, and be designed to have minimal
flood damage potential. Examples of accessory
structures are detached garages, carports, storage
sheds, pole barns, and hay sheds.
(3) Addition (to an existing structure) means any
walled and roofed expansion to the perimeter
of a structure in which the addition is connected
by a common load-bearing wall other than a
firewall. Any walled and roofed addition, which
is connected by a firewall or is separated by
independent perimeter load-bearing walls, is new
construction.
(4) Appeal means a request for a review of the
floodplain administrator’s interpretation of any
provision of this Article.
14-4 May 20, 2026
21-14.02 FlOODPlAIN
Definitions
(5) Area of shallow flooding means a designated AO
or AH Zone on the community’s Flood Insurance
Rate Map (FIRM) with base flood depths from 1 to
3 feet where a clearly defined channel does not
exist, where the path of flooding is unpredictable
and indeterminate, and where velocity flow may be
evident. Such flooding is characterized by ponding
or sheet flow.
(6) Base Flood means the flood having a 1 percent
chance of being equaled or exceeded in any given
year.
(7) Base Flood Elevation (BFE) means the elevation of
the 1 percent annual chance flood.
(8) Basement means that portion of a structure having
its floor sub-grade (below ground level) on all
sides.
(9) Boundary River means the part of the Ohio River
that forms the boundary between Kentucky and
Indiana.
(10) Boundary River Floodway means the floodway of
a boundary river.
(11) Building - see “Structure.”
(12) Community means a political entity that has
the authority to adopt and enforce floodplain
ordinances for the area under its jurisdiction.
(13) Community Rating System (CRS) means a program
developed by the Federal Insurance Administration
to provide incentives for those communities in
the Regular Program that have gone beyond the
minimum floodplain management requirements to
develop extra measures to provide protection from
flooding.
(14) Critical facility means a facility for which even
a slight chance of flooding might be too great.
Critical facilities include, but are not limited to,
schools, nursing homes, hospitals, police, fire, and
emergency response installations, installations
which produce, use or store hazardous materials or
hazardous waste.
(15) D Zone means unstudied areas where flood
hazards are undetermined, but flooding is possible.
Flood insurance is available in participating
communities but is not required by regulation in
this zone.
(16) Development means any man made change to
improved or unimproved real estate including but
not limited to:
(A) construction, reconstruction, or placement of a
structure or any addition to a structure;
(B) installing a manufactured home on a site,
preparing a site for a manufactured home or
installing a recreational vehicle on a site for
more than 180 days;
(C) installing utilities, erection of walls and fences,
construction of roads, or similar projects;
(D) construction of flood control structures such
as levees, dikes, dams, channel improvements,
etc.;
(E) mining, dredging, filling, grading, excavation, or
drilling operations;
(F) construction and/or reconstruction of bridges
or culverts;
(G) storage of materials; or
(H) any other activity that might change the
direction, height, or velocity of flood or surface
waters.
“Development” does not include activities
such as the maintenance of existing structures
and facilities such as painting, re-roofing;
resurfacing roads; or gardening, plowing, and
similar agricultural practices that do not involve
filling, grading, excavation, or the construction
of permanent structures.
(17) Elevated structure means a non-basement
structure built to have the lowest floor elevated
above the ground level by means of fill, solid
foundation perimeter walls, filled stem wall
foundations (also called chain walls), pilings, or
columns (posts and piers).
(18) Elevation Certificate is a certified statement that
verifies a structure’s elevation information.
SOUTH BEND ZONING ORDINANCE 14-5
FlOODPlAIN 21-14.02
Definitions
(19) Emergency Program means the first phase
under which a community participates in the
NFIP. It is intended to provide a first layer amount
of insurance at subsidized rates on all insurable
structures in that community before the effective
date of the initial FIRM.
(20) Existing manufactured home park or subdivision
means a manufactured home park or subdivision
for which the construction of facilities for servicing
the lots on which the manufactured homes are to
be affixed (including, at a minimum, the installation
of utilities, the construction of streets, and either
final site grading or the pouring of concrete pads)
is completed before the effective date of the
community’s first floodplain ordinance.
(21) Expansion to an existing manufactured home
park or subdivision means the preparation of
additional sites by the construction of facilities
for servicing the lots on which the manufactured
homes are to be affixed (including the installation of
utilities, the construction of streets, and either final
site grading or the pouring of concrete pads).
(22) FEMA means the Federal Emergency Management
Agency.
(23) Flood means a general and temporary condition
of partial or complete inundation of normally dry
land areas from the overflow, the unusual and rapid
accumulation, or the runoff of surface waters from
any source.
(24) Flood Boundary and Floodway Map (FBFM) means
an official map on which the Federal Emergency
Management Agency (FEMA) or Federal Insurance
Administration (FIA) has delineated the areas of
flood hazards and regulatory floodway.
(25) Flood Insurance Rate Map (FIRM) means an official
map of a community, on which FEMA has delineated
both the areas of special flood hazard and the risk
premium zones applicable to the community.
(26) Flood Insurance Study (FIS) is the official hydraulic
and hydrologic report provided by FEMA. The
report contains flood profiles, as well as the FIRM,
FBFM (where applicable), and the water surface
elevation of the base flood.
(27) Flood Prone Area means any land area
acknowledged by a community as being
susceptible to inundation by water from any
source. (See “Flood”)
(28) Flood Protection Grade (FPG) is the elevation of
the regulatory flood plus two feet at any given
location in the SFHA. (See “Freeboard”)
(29) Floodplain means the channel proper and the
areas adjoining any wetland, lake, or watercourse
which have been or hereafter may be covered by
the regulatory flood. The floodplain includes both
the floodway and the fringe districts.
(30) Floodplain management means the operation of
an overall program of corrective and preventive
measures for reducing flood damage and
preserving and enhancing, where possible, natural
resources in the floodplain, including but not
limited to emergency preparedness plans, flood
control works, floodplain management regulations,
and open space plans.
(31) Floodplain management regulations means this
Article and other zoning ordinances, subdivision
regulations, building codes, health regulations,
special purpose ordinances, and other applications
of police power which control development in
flood-prone areas. This term describes federal,
state, or local regulations in any combination
thereof, which provide standards for preventing
and reducing flood loss and damage. Floodplain
management regulations are also referred to as
floodplain regulations, floodplain ordinance, flood
damage prevention ordinance, and floodplain
management requirements.
(32) Floodproofing (dry floodproofing) is a method
of protecting a structure that ensures that the
structure, together with attendant utilities and
sanitary facilities, is watertight to the floodproofed
design elevation with walls that are substantially
impermeable to the passage of water. All structural
components of these walls are capable of resisting
hydrostatic and hydrodynamic flood forces,
including the effects of buoyancy, and anticipated
debris impact forces.
14-6 May 20, 2026
21-14.02 FlOODPlAIN
Definitions
(33) Floodproofing certificate is a form used to certify
compliance for non-residential structures as an
alternative to elevating structures to or above the
FPG. This certification shall be by a Registered
Professional Engineer or Architect.
(34) Floodway is the channel of a river or stream and
those portions of the floodplains adjoining the
channel which are reasonably required to efficiently
carry and discharge the peak flood flow of the
regulatory flood of any river or stream.
(35) Freeboard means a factor of safety, usually
expressed in feet above the BFE, which is applied
for the purposes of floodplain management. It is
used to compensate for the many unknown factors
that could contribute to flood heights greater than
those calculated for the base flood.
(36) Fringe is those portions of the floodplain lying
outside the floodway.
(37) Hardship (as related to variances of this Article)
means the exceptional hardship that would result
from a failure to grant the requested variance.
The Board of Zoning Appeals requires that the
variance is exceptional, unusual, and peculiar
to the lot involved. Mere economic or financial
hardship alone is NOT exceptional. Inconvenience,
aesthetic considerations, physical handicaps,
personal preferences, or the disapproval of one’s
neighbors likewise cannot, as a rule, qualify as an
exceptional hardship. All of these problems can be
resolved through other means without granting a
variance, even if the alternative is more expensive,
or requires the property owner to build elsewhere
or put the lot to a different use than originally
intended.
(38) Highest adjacent grade means the highest natural
elevation of the ground surface, prior to the start
of construction, next to the proposed walls of a
structure.
(39) Historic structures means any structures
individually listed on the National Register of
Historic Places or the Indiana State Register of
Historic Sites and Structures.
(40) Increased Cost of Compliance (ICC) means the
cost to repair a substantially damaged structure that
exceeds the minimal repair cost and that is required
to bring a substantially damaged structure into
compliance with the local flood damage prevention
ordinance. Acceptable mitigation measures are
elevation, relocation, demolition, or any combination
thereof. All renewal and new business flood
insurance policies with effective dates on or after
June 1, 1997, will include ICC coverage.
(41) letter of Final Determination (lFD) means a
letter issued by FEMA during the mapping update
process which establishes final elevations and
provides the new flood map and flood study to
the community. The LFD initiates the six-month
adoption period. The community shall adopt or
amend its floodplain management regulations
during this six-month period unless the community
has previously incorporated an automatic adoption
clause.
(42) letter of Map Change (lOMC) is a general term
used to refer to the several types of revisions
and amendments to FEMA maps that can be
accomplished by letter. They include Letter of
Map Amendment (LOMA), Letter of Map Revision
(LOMR), and Letter of Map Revision based on Fill
(LOMR-F). The definitions are set forth as follows:
(A) letter of Map Amendment (lOMA) means an
amendment to the currently effective FEMA
map that establishes that a lot is not located
in a SFHA through the submittal of property-
specific elevation data. A LOMA is only issued
by FEMA.
(B) letter of Map Revision (lOMR) means an
official revision to the currently effective FEMA
map. It is issued by FEMA and changes flood
zones, delineations, and elevations.
(C) Letter of Map Revision Based on Fill (LOMR-F)
means an official revision by letter to an
effective NFIP map. A LOMR-F provides FEMA’s
determination concerning whether a structure
or lot has been elevated on fill above the BFE
and excluded from the SFHA.
SOUTH BEND ZONING ORDINANCE 14-7
FlOODPlAIN 21-14.02
Definitions
(43) lowest adjacent grade means the lowest
elevation, after completion of construction, of the
ground, sidewalk, patio, deck support, or basement
entryway immediately next to the structure.
(44) Lowest floor means the lowest elevation described
among the following:
(A) The top of the lowest level of the structure.
(B) The top of the basement floor.
(C) The top of the garage floor, if the garage is the
lowest level of the structure.
(D) The top of the first floor of a structure elevated
on pilings or pillars.
(E) The top of the floor level of any enclosure,
other than a basement, below an elevated
structure where the walls of the enclosure
provide any resistance to the flow of flood
waters unless:
i. The walls are designed to automatically
equalize the hydrostatic flood forces on
the walls by allowing for the entry and exit
of flood waters by providing a minimum
of two openings (in addition to doorways
and windows) in a minimum of two exterior
walls; if a structure has more than one
enclosed area, each shall have openings
on exterior walls;
ii. The total net area of all openings shall be
at least 1 square inch for every 1 square
foot of enclosed area; the bottom of all
such openings shall be no higher than 1
foot above the exterior grade or the interior
grade immediately beneath each opening,
whichever is higher; and,
iii. Such enclosed space shall be usable
solely for the parking of vehicles and
building access.
(45) Manufactured home means a structure,
transportable in one or more sections, which is
built on a permanent chassis and is designed
for use with or without a permanent foundation
when attached to the required utilities. The
term “manufactured home” does not include a
“recreational vehicle.”
(46) Manufactured home park or subdivision means a
lot (or contiguous lots) of land divided into two or
more manufactured home lots for rent or sale.
(47) Market value means the building value, excluding
the land (as agreed to between a willing buyer and
seller), as established by what the local real estate
market will bear. Market value can be established
by independent certified appraisal, replacement
cost depreciated by age of building (actual cash
value), or adjusted assessed values.
(48) Mitigation means sustained actions taken to
reduce or eliminate long-term risk to people
and property from hazards and their effects. The
purpose of mitigation is twofold: to protect people
and structures, and to minimize the cost of disaster
response and recovery.
(49) National Flood Insurance Program (NFIP) is
the federal program that makes flood insurance
available to owners of property in participating
communities nationwide through the cooperative
efforts of the Federal Government and the private
insurance industry.
(50) National Geodetic Vertical Datum (NGVD) of 1929
as corrected in 1929 is a vertical control used as a
reference for establishing varying elevations within
the floodplain.
(51) New construction means any structure for which
the “start of construction” commenced after the
effective date of the community’s first floodplain
ordinance.
(52) New manufactured home park or subdivision
means a manufactured home park or subdivision
for which the construction of facilities for servicing
the lots on which the manufactured homes are to
be affixed (including at a minimum, the installation
of utilities, the construction of streets, and either
final site grading or the pouring of concrete pads)
is completed on or after the effective date of the
community’s first floodplain ordinance.
(53) Non-boundary river floodway means the floodway
of any river or stream other than a boundary river.
14-8 May 20, 2026
21-14.02 FlOODPlAIN
Definitions
(54) North American Vertical Datum of 1988 (NAVD 88)
as adopted in 1993 is a vertical control datum used
as a reference for establishing varying elevations
within the floodplain.
(55) Obstruction includes, but is not limited to, any
dam, wall, wharf, embankment, levee, dike, pile,
abutment, protection, excavation, canalization,
bridge, conduit, culvert, building, wire, fence, rock,
gravel, refuse, fill, structure, vegetation, or other
material in, along, across or projecting into any
watercourse which may alter, impede, retard or
change the direction and/or velocity of the flow of
water; or due to its location, its propensity to snare
or collect debris carried by the flow of water, or its
likelihood of being carried downstream.
(56) One-percent annual chance flood is the flood
that has a 1 percent chance of being equaled or
exceeded in any given year. Any flood zone that
begins with the letter A is subject to the 1 percent
annual chance flood. See “Regulatory Flood.”
(57) Physical Map Revision (PMR) is an official
republication of a community’s FEMA map to
effect changes to base (1 percent annual chance)
flood elevations, floodplain boundary delineations,
regulatory floodways, and planimetric features.
These changes typically occur as a result of
structural works or improvements, annexations
resulting in additional flood hazard areas, or
correction to base flood elevations or SFHAs.
(58) Public safety and nuisance means anything which
is injurious to the safety or health of an entire
community, neighborhood or any considerable
number of persons, or unlawfully obstructs the free
passage or use, in the customary manner, of any
navigable lake, or river, bay, stream, canal, or basin.
(59) Recreational vehicle means a vehicle which is:
(1) built on a single chassis; (2) 400 square feet
or less when measured at the largest horizontal
projections; (3) designed to be self propelled or
permanently towable by a light duty truck; and
(4) designed primarily not for use as a permanent
dwelling, but as quarters for recreational camping,
travel, or seasonal use.
(60) Regular program means the phase of the
community’s participation in the NFIP where
more comprehensive floodplain management
requirements are imposed and higher amounts of
insurance are available based upon risk zones and
elevations determined in a FIS.
(61) Regulatory flood means the flood having a 1
percent chance of being equaled or exceeded
in any given year, as calculated by a method and
procedure that is acceptable to and approved by
the Indiana Department of Natural Resources and
the Federal Emergency Management Agency.
The regulatory flood elevation at any location is as
defined in Section 21-14.03(b) of this Article. The
“Regulatory Flood” is also known by the term “Base
Flood,” “One-Percent Annual Chance Flood,” and
“100-Year Flood.”
(62) Repetitive loss means flood-related damages
sustained by a structure on two separate occasions
during a 10-year period for which the cost of repairs
at the time of each such flood event, on the average,
equaled or exceeded 25 percent of the market
value of the structure before the damage occurred.
(63) Section 1316 is that section of the National Flood
Insurance Act of 1968, as amended, which states
that no new flood insurance coverage shall be
provided for any lot that the Administrator finds has
been declared by a duly constituted state or local
zoning authority or other authorized public body
to be in violation of state or local laws, regulations,
or ordinances that intended to discourage or
otherwise restrict land development or occupancy
in flood-prone areas.
(64) Special Flood Hazard Area (SFHA) means
those lands within the jurisdiction of the City of
South bend, Indiana subject to inundation by the
regulatory flood. The SFHAs of the City of South
Bend are generally identified as such on the St.
Joseph County, Indiana and Incorporated Areas
Flood Insurance Rate Map dated January 6, 2011
as well as any future updates, amendments, or
revisions, prepared by the Federal Emergency
Management Agency with the most recent date.
(These areas are shown on a FIRM as Zone A, AE,
A1- A30, AH, AR, A99, or AO.)
SOUTH BEND ZONING ORDINANCE 14-9
FlOODPlAIN 21-14.02
Definitions
(65) Start of construction includes substantial
improvement, and means the date the building
permit was issued, provided the actual start
of construction, repair, reconstruction, or
improvement was within 180 days of the permit
date. The actual start means either the first
placement of permanent construction of a
structure on a site, such as the pouring of a slab or
footings, the installation of piles, the construction
of columns, or any work beyond the stage of
excavation; or the placement of a manufactured
home on a foundation. Permanent construction
does not include land preparation, such as
clearing, grading and filling; nor does it include the
installation of streets and/or walkways; nor does it
include excavation for a basement, footings, piers,
foundations, or the erection of temporary forms;
nor does it include the installation on the lot of
accessory buildings, such as garages or sheds not
occupied as dwelling units or not part of the main
structure. For a substantial improvement, the actual
start of construction means the first alteration of
any wall, ceiling, floor, or other structural part of a
building, whether or not that alteration affects the
external dimensions of the building.
(66) Structure means a structure that is principally
above ground and is enclosed by walls and a roof.
The term includes a gas or liquid storage tank, a
manufactured home, or a prefabricated building.
The term also includes recreational vehicles to be
installed on a site for more than 180 days.
(67) Substantial damage means damage of any
origin sustained by a structure whereby the cost
of restoring the structure to its before-damaged
condition would equal or exceed 50 percent of the
market value of the structure before the damage
occurred.
(68) Substantial improvement means any
reconstruction, rehabilitation, addition, or other
improvement of a structure, the cost of which
equals or exceeds 50 percent of the market value
of the structure before the “start of construction”
of the improvement. This term includes
structures that have incurred “repetitive loss” or
“substantial damage” regardless of the actual
repair work performed. The term does not include
improvements of structures to correct existing
violations of state or local health, sanitary, or safety
code requirements.
(69) Suspension means the removal of a participating
community from the NFIP because the community
has not enacted and/or enforced the proper
floodplain management regulations required for
participation in the NFIP.
(70) Variance is a grant of relief from the requirements
of this Article, which permits construction in a
manner otherwise prohibited by this Article where
specific enforcement would result in unnecessary
hardship.
(71) Violation means the failure of a structure or
other development to be fully compliant with
this Article. A structure or other development
without the elevation, other certification, or other
evidence of compliance required in this Article is
presumed to be in violation until such time as that
documentation is provided.
(72) Watercourse means a lake, river, creek, stream,
wash, channel or other topographic feature on
or over which waters flow at least periodically.
Watercourse includes specifically designated areas
in which substantial flood damage may occur.
(73) X zone means the area where the flood hazard
is less than that in the SFHA. Shaded X zones
shown on recent FIRMs (B zones on older FIRMs)
designate areas subject to inundation by the flood
with a 0.2 percent chance of being equaled or
exceeded (the 500-year flood). Unshaded X zones
(C zones on older FIRMs) designate areas where
the annual exceedance probability of flooding is
less than 0.2 percent.
(74) Zone means a geographical area shown on a
FHBM or FIRM that reflects the severity or type of
flooding in the area.
(75) Zone A (see definition for A zone).
14-10 May 20, 2026
21-14.02 FlOODPlAIN
Definitions
(76) Zone B, C, and X means areas identified in the
community as areas of moderate or minimal
hazard from the principal source of flood in the
area. However, buildings in these zones could be
flooded by severe, concentrated rainfall coupled
with inadequate local drainage systems. Flood
insurance is available in participating communities
but is not required by regulation in these zones.
(Zone X is used on new and revised maps in place
of Zones B and C.)
SOUTH BEND ZONING ORDINANCE 14-11
FlOODPlAIN 21-14.03
General Provisions
Section 21-14.03: General Provisions
(a) lands to Which This Floodplain Regulations Article
Applies
This Article shall apply to all SFHAs and known flood
prone areas within the jurisdiction of the City of South
Bend, Indiana.
(b) Basis for Establishing Regulatory Flood Data
This Article’s protection standard is the regulatory
flood. The best available regulatory flood data is set
forth as follows:
(1) The regulatory flood elevation, floodway, and
fringe limits for the studied SFHAs within the
jurisdiction of the City of South Bend, Indiana shall
be as delineated on the 1 percent annual chance
flood profiles in the Flood Insurance Study of St.
Joseph County, Indiana and Incorporated Areas
dated January 6, 2011 and the corresponding Flood
Insurance Rate Map dated January 6, 2011 as well
as any future updates, amendments, or revisions,
prepared by the Federal Emergency Management
Agency with the most recent date.
(2) The regulatory flood elevation, floodway, and
fringe limits for each of the SFHAs within the
jurisdiction of the City of South Bend, Indiana,
delineated as an “A Zone” on the St. Joseph
County, Indiana and Incorporated Areas Flood
Insurance Rate Map dated January 6, 2011 as well
as any future updates, amendments, or revisions,
prepared by the Federal Emergency Management
Agency with the most recent date, shall be
according to the best data available as provided
by the Indiana Department of Natural Resources;
provided the upstream drainage area from the
subject site is greater than 1 square mile. Whenever
a party disagrees with the best available data, the
party needs to replace existing data with better
data that meets current engineering standards.
To be considered, this data shall be submitted to
the Indiana Department of Natural Resources for
review and subsequently approved.
(3) In the absence of a published FEMA map, or
absence of identification on a FEMA map, the
regulatory flood elevation, floodway, and fringe
limits of any watercourse in the community’s
known flood prone areas shall be according to
the best data available as provided by the Indiana
Department of Natural Resources; provided the
upstream drainage area from the subject site is
greater than 1 square mile.
(4) Upon issuance of a Letter of Final Determination
(LFD), any more restrictive data in the new (not
yet effective) mapping/study shall be utilized
for permitting and construction (development)
purposes, replacing all previously effective less
restrictive flood hazard data provided by FEMA.
(c) Establishment of Floodplain Development Permit.
A Floodplain Development Permit shall be required in
conformance with the provisions of this Article prior to
the commencement of any development activities in
areas of special flood hazard.
(d) Compliance
No structure shall hereafter be located, extended,
converted or structurally altered within the SFHA
without full compliance with the terms of this Article
and other applicable regulations. No land or stream
within the SFHA shall hereafter be altered without full
compliance with the terms of this Article and other
applicable regulations.
(e) Abrogation and Greater Restrictions.
This Article is not intended to repeal, abrogate, or
impair any existing easements, covenants, or deed
restrictions. However, where this Article and another
conflict or overlap, whichever imposes the more
stringent restrictions shall prevail.
(f) Discrepancy between Mapped Floodplain and Actual
Ground Elevations
(1) In cases where there is a discrepancy between the
mapped floodplain (SFHA) on the FIRM and the
actual ground elevations, the elevation provided on
the profiles shall govern.
(2) If the elevation of the site in question is below the
base flood elevation, that site shall be included in
the SFHA and regulated accordingly.
14-12 May 20, 2026
21-14.03 FlOODPlAIN
General Provisions
(3) If the elevation (natural grade) of the site in
question is above the base flood elevation and
not located within the floodway, that site shall be
considered outside the SFHA and the floodplain
regulations will not be applied. The property owner
shall be advised to apply for a LOMA.
(g) Interpretation
In the interpretation and application of this Article all
provisions shall be:
(1) Considered as minimum requirements;
(2) Liberally construed in favor of the governing body;
and,
(3) Deemed neither to limit nor repeal any other
powers granted under state statutes.
(h) Warning and Disclaimer of liability
The degree of flood protection required by this Article
is considered reasonable for regulatory purposes
and is based on available information derived from
engineering and scientific methods of study. Larger
floods can and will occur on rare occasions. Therefore,
this Article does not create any liability on the part of
the City of South Bend, Indiana, the Indiana Department
of Natural Resources, or the State of Indiana, for
any flood damage that results from reliance on this
Article or any administrative decision made lawfully
thereunder.
(i) Penalties for Violation
Failure to obtain a Floodplain Development Permit in
the SFHA or failure to comply with the requirements
of a Floodplain Development Permit or conditions of
a variance shall be deemed to be a violation of this
Article. All violations shall be considered a common
nuisance and be treated as such in accordance with the
provisions of the Zoning Ordinance of the City of South
Bend, Indiana. All violations shall be punishable by a
fine per Section 21-13.02(h).
(1) A separate offense shall be deemed to occur for
each day the violation continues to exist.
(2) The City of South Bend Zoning Administrator
shall inform the owner that any such violation is
considered a willful act to increase flood damages
and therefore may cause coverage by a Standard
Flood Insurance Policy to be suspended.
(3) Nothing herein shall prevent the City of South
Bend, Indiana from taking such other lawful action
to prevent or remedy any violations. All costs
connected therewith shall accrue to the person or
persons responsible.
SOUTH BEND ZONING ORDINANCE 14-13
FlOODPlAIN 21-14.04
Administration
Section 21-14.04: Administration
(a) Designation of Administrator
The Common Council hereby appoints the Building
Commissioner to administer and implement the
provisions of this Article and is herein referred to as the
Floodplain Administrator.
(b) Permit Procedures
Application for a Floodplain Development Permit shall
be made to the Floodplain Administrator on forms
furnished by him or her prior to any development
activities, and may include, but not be limited to, the
following: plans in duplicate drawn to scale showing
the nature, location, dimensions, and elevations of
the area in question; existing or proposed structures,
earthen fill, storage of materials or equipment, drainage
facilities, and the location of the foregoing. Specifically
the following information is required:
(1) Application Stage
(A) A description of the proposed development;
(B) Location of the proposed development
sufficient to accurately locate property and
structure(s) in relation to existing roads and
streams;
(C) A legal description of the property site;
(D) A site development plan showing existing and
proposed development locations and existing
and proposed land grades;
(E) Elevation of the top of the lowest floor
(including basement) of all proposed buildings.
Elevation should be in NAVD 88 or NGVD;
(F) Elevation (in NAVD 88 or NGVD) to which any
non-residential structure will be floodproofed;
and
(G) Description of the extent to which any
watercourse will be altered or relocated as a
result of proposed development. A hydrologic
and hydraulic engineering study is required
and any watercourse changes submitted to
DNR for approval and then to FEMA as a Letter
of Map Revision. (See Section 21-14.04(c)(6) for
additional information.)
(2) Construction Stage. Upon establishment of the
floodproofed elevation of a floodproofed structure,
it shall be the duty of the applicant to submit to the
Floodplain Administrator a floodproofing certificate.
Certification shall be prepared by or under the
direct supervision of a registered professional
engineer and certified by same (the Floodplain
Administrator shall review the floodproofing
certification submitted). The applicant shall correct
any deficiencies detected by such review before
any further work is allowed to proceed. Failure to
submit the floodproofing certification or failure to
make correction required shall be cause to issue a
stop-work order for the project.
(3) Finished Construction. Upon completion of
construction, an elevation certification (FEMA
Elevation Certificate Form 81-31 or any future
updates) which depicts the “as-built” lowest
floor elevation is required to be submitted to the
Floodplain Administrator. If the project includes a
floodproofing measure, floodproofing certification
(FEMA Floodproofing Certificate Form 81-65 or any
future updates) is required to be submitted by the
applicant to the Floodplain Administrator.
(c) Duties and Responsibilities of the Floodplain
Administrator
The Floodplain Administrator and/or designated
staff is hereby authorized and directed to enforce the
provisions of this Article. The administrator is further
authorized to render interpretations of this Article,
which are consistent with its spirit and purpose. Duties
and responsibilities of the Floodplain Administrator
shall include, but not be limited to:
(1) Review all floodplain development permits to
assure that the permit requirements of this Article
have been satisfied;
(2) Inspect and inventory damaged structures in
the SFHA and complete substantial damage
determinations;
14-14 May 20, 2026
21-14.04 FlOODPlAIN
Administration
(3) Ensure that construction authorization has been
granted by the Indiana Department of Natural
Resources for all development projects subject to
Section 21-14.05(e) and Section 21-14.05(g)(1) of this
Article, and maintain a record of such authorization
(either copy of actual permit or floodplain analysis/
regulatory assessment);
(4) Ensure that all necessary federal or state permits
have been received prior to issuance of the local
floodplain development permit. Copies of such
permits/authorizations are to be maintained on file
with the floodplain development permit;
(5) Maintain and track permit records involving
additions and improvements to residences located
in the floodway;
(6) Notify adjacent communities and the State
Floodplain Coordinator prior to any alteration or
relocation of a watercourse, and submit copies of
such notifications to FEMA;
(7) Maintain for public inspection and furnish upon
request local permit documents, damaged
structure inventories, substantial damage
determinations, regulatory flood data, SFHA maps,
Letters of Map Change (LOMC), copies of DNR
permits, letters of authorization, and floodplain
analysis and regulatory assessments (letters of
recommendation), federal permit documents, and
“as-built” elevation and floodproofing data for all
buildings constructed subject to this Article;
(8) Utilize and enforce all Letters of Map Change
(LOMC) or Physical Map Revisions (PMR) issued by
FEMA for the currently effective SFHA maps of the
community;
(9) Assure that maintenance is provided within the
altered or relocated portion of said watercourse so
that the flood-carrying capacity is not diminished;
(10) Review certified plans and specifications for
compliance;
(11) Verify and record the actual elevation of the
lowest floor (including basement) of all new or
substantially improved structures, in accordance
with Section 21-14.04(b);
(12) Verify and record the actual elevation to which
any new or substantially improved structures have
been floodproofed, in accordance with Section 21-
14.05(b)(3);
(13) Stop Work Orders
(A) Upon notice from the Floodplain Administrator,
work on any building, structure or premises
that is being done contrary to the provisions of
this Article shall immediately cease.
(B) Such notice shall be in writing and shall be
given to the owner of the property, or to his
agent, or to the person doing the work, and
shall state the conditions under which work
may be resumed.
(14) Revocation of Permits
(A) The Floodplain Administrator may revoke a
permit or approval, issued under the provisions
of the Article, in cases where there has been
any false statement or misrepresentation as to
the material fact in the application or plans on
which the permit or approval was based.
(B) The Floodplain Administrator may revoke a
permit upon determination by the floodplain
administrator that the construction, erection,
alteration, repair, moving, demolition,
installation, or replacement of the structure for
which the permit was issued is in violation of,
or not in conformity with, the provisions of this
Article.
SOUTH BEND ZONING ORDINANCE 14-15
FlOODPlAIN 21-14.05
Provisions for Flood Hazard Reduction
Section 21-14.05: Provisions for Flood Hazard Reduction
(a) General Standards
In all SFHAs and known flood prone areas the following
provisions are required:
(1) New construction and substantial improvements
shall be anchored to prevent flotation, collapse, or
lateral movement of the structure;
(2) Manufactured homes shall be anchored to prevent
flotation, collapse, or lateral movement. Methods of
anchoring may include, but are not limited to, use
of over-the-top or frame ties to ground anchors.
This standard shall be in addition to and consistent
with applicable state requirements for resisting
wind forces;
(3) New construction and substantial improvements
shall be constructed with materials and utility
equipment resistant to flood damage below the
FPG;
(4) New construction and substantial improvements
shall be constructed by methods and practices that
minimize flood damage;
(5) Electrical, heating, ventilation, plumbing, air
conditioning equipment, utility meters, and other
service facilities shall be located at/above the FPG
or designed so as to prevent water from entering
or accumulating within the components below
the FPG. Water and sewer pipes, electrical and
telephone lines, submersible pumps, and other
waterproofed service facilities may be located
below the FPG;
(6) New and replacement water supply systems shall
be designed to minimize or eliminate infiltration of
flood waters into the system;
(7) New and replacement sanitary sewage systems
shall be designed to minimize or eliminate
infiltration of flood waters into the system;
(8) On-site waste disposal systems shall be located
and constructed to avoid impairment to them or
contamination from them during flooding;
(9) Any alteration, repair, reconstruction, or
improvements to a structure that is in compliance
with the provisions of this Article shall meet the
requirements of “new construction” as contained in
this Article;
(10) Whenever any portion of the SFHA is authorized
for use, the volume of space which will be
occupied by the authorized fill or structure below
the BFE shall be compensated for and balanced by
an equivalent volume of excavation taken below
the BFE. The excavation volume shall be at least
equal to the volume of storage lost (replacement
ratio of 1 to 1) due to the fill or structure.
(A) The excavation shall take place in the
floodplain and in the same lot in which the
authorized fill or structure is located;
(B) Under certain circumstances, the excavation
may be allowed to take place outside of but
adjacent to the floodplain provided that the
excavated volume will be below the regulatory
flood elevation, will be in the same lot in which
the authorized fill or structure is located, will
be accessible to the regulatory flood water, will
not be subject to ponding when not inundated
by flood water, and that it shall not be refilled;
(C) The excavation shall provide for true storage of
floodwater but shall not be subject to ponding
when not inundated by flood water;
(D) The fill or structure shall not obstruct a
drainage way leading to the floodplain;
(E) The grading around the excavation shall be
such that the excavated area is accessible to
the regulatory flood water;
(F) The fill or structure shall be of a material
deemed stable enough to remain firm and
in place during periods of flooding and shall
include provisions to protect adjacent property
owners against any increased runoff or
drainage resulting from its placement; and,
14-16 May 20, 2026
21-14.05 FlOODPlAIN
Provisions for Flood Hazard Reduction
(G) Plans depicting the areas to be excavated and
filled shall be submitted prior to the actual
start of construction or any site work; once site
work is complete, but before the actual start of
construction, the applicant shall provide to the
Floodplain Administrator a certified survey of
the excavation and fill sites demonstrating the
fill and excavation comply with this article.
(b) Specific Standards
In all SFHAs, the following provisions are required:
(1) In addition to the requirements of Section 21-
14.05(a), all structures to be located in the SFHA
shall be protected from flood damage below the
FPG. This building protection requirement applies
to the following situations:
(A) Construction or placement of any new
structure having a gross floor area greater than
400 square feet;
(B) Addition or improvement made to any existing
structure where the cost of the addition or
improvement equals or exceeds 50 percent of
the value of the existing structure (excluding
the value of the land);
(C) Reconstruction or repairs made to a damaged
structure where the costs of restoring the
structure to its before damaged condition
equals or exceeds 50 percent of the market
value of the structure (excluding the value of
the land) before damage occurred;
(D) Installing a travel trailer or recreational vehicle
on a site for more than 180 days;
(E) Installing a manufactured home on a new site
or a new manufactured home on an existing
site. This Article does not apply to returning the
existing manufactured home to the same site
it lawfully occupied before it was removed to
avoid flood damage;
(F) Reconstruction or repairs made to a repetitive
loss structure; and
(G) Addition or improvement made to any
existing structure with a previous addition
or improvement constructed since the
community’s first floodplain ordinance.
(2) Residential Structures. New construction or
substantial improvement of any residential
structure (or manufactured home) shall have the
lowest floor; including basement, at or above the
FPG (two feet above the base flood elevation).
Should solid foundation perimeter walls be used to
elevate a structure, openings sufficient to facilitate
the unimpeded movements of floodwaters shall
be provided in accordance with the standards of
Section 21-14.05(b)(4).
(3) Non-Residential Structures. New construction
or substantial improvement of any commercial,
industrial, or non-residential structure (or
manufactured home) shall either have the lowest
floor, including basement, elevated to or above
the FPG (two feet above the base flood elevation)
or be floodproofed to or above the FPG. Should
solid foundation perimeter walls be used to
elevate a structure, openings sufficient to facilitate
the unimpeded movements of floodwaters shall
be provided in accordance with the standards
of Section 21-14.05(b)(4). Structures located in all
“A Zones” may be floodproofed in lieu of being
elevated if done in accordance with the following:
(A) A Registered Professional Engineer or Architect
shall certify that the structure has been
designed so that below the FPG, the structure
and attendant utility facilities are watertight
and capable of resisting the effects of the
regulatory flood. The structure design shall
take into account flood velocities, duration,
rate of rise, hydrostatic pressures, and impacts
from debris or ice. Such certification shall be
provided to the floodplain administrator as set
forth in Section 21-14.04(c)(12).
(B) Floodproofing measures shall be operable
without human intervention and without an
outside source of electricity.
SOUTH BEND ZONING ORDINANCE 14-17
FlOODPlAIN 21-14.05
Provisions for Flood Hazard Reduction
(4) Elevated Structures. New construction or
substantial improvements of elevated structures
shall have the lowest floor at or above the FPG.
Elevated structures with fully enclosed areas
formed by foundation and other exterior walls
below the flood protection grade shall be designed
to preclude finished living space and designed
to allow for the entry and exit of floodwaters to
automatically equalize hydrostatic flood forces
on exterior walls. Designs shall either meet the
following minimum criteria:
(A) Provide a minimum of two openings located in
a minimum of two exterior walls (having a total
net area of not less than 1 square inch for every
1 square foot of enclosed area).
(B) The bottom of all openings shall be no more
than 1 foot above the exterior grade or the
interior grade immediately beneath each
opening, whichever is higher.
(C) Openings may be equipped with screens,
louvers, valves, or other coverings or devices
provided they permit the automatic flow of
floodwaters in both directions.
(D) Access to the enclosed area shall be the
minimum necessary to allow for parking for
vehicles (garage door) or limited storage of
maintenance equipment used in connection
with the premises (standard exterior door) or
entry to the living area (stairway or elevator).
(E) The interior portion of such enclosed area shall
not be partitioned or finished into separate
rooms.
(F) The interior grade of such enclosed area shall
be at an elevation at or higher than the exterior
grade.
(G) Property owners shall be required to execute
and record with the structure’s deed a non-
conversion agreement declaring that the area
below the lowest floor (where the interior
height of the enclosure exceeds 6 feet)
shall not be improved, finished or otherwise
converted; the community will have the right to
inspect the enclosed area. The non-conversion
agreement shall be recorded in the office of
the St. Joseph County Recorder.
(5) Structures Constructed on Fill. A residential or
nonresidential structure may be constructed
on a permanent land fill in accordance with the
following:
(A) The fill shall be placed in layers no greater than
1 foot deep before compacting to 95 percent
of the maximum density obtainable with either
the Standard or Modified Proctor Test method.
The results of the test showing compliance
shall be retained in the permit file.
(B) The fill shall extend 10 feet beyond the
foundation of the structure before sloping
below the FPG.
(C) The fill shall be protected against erosion and
scour during flooding by vegetative cover,
riprap, or bulkheading. If vegetative cover is
used, the slopes shall be no steeper than 3
horizontal to 1 vertical.
(D) The fill shall not adversely affect the flow of
surface drainage from or onto neighboring
properties.
(E) The top of the lowest floor including
basements shall be at or above the FPG.
(F) Fill shall be composed of clean granular or
earthen material.
(6) Standards for Manufactured Homes and
Recreational Vehicles. Manufactured homes and
recreational vehicles to be installed or substantially
improved on a site for more than 180 days shall
meet one of the following requirements:
(A) These requirements apply to all manufactured
homes to be placed on a site outside a
manufactured home park or subdivision; in a
new manufactured home park or subdivision;
in an expansion to an existing manufactured
home park or subdivision; or in an existing
manufactured home park or subdivision on
which a manufactured home has incurred
“substantial damage” as a result of a flood:
14-18 May 20, 2026
21-14.05 FlOODPlAIN
Provisions for Flood Hazard Reduction
i. The manufactured home shall be elevated
on a permanent foundation such that the
lowest floor shall be at or above the FPG
and securely anchored to an adequately
anchored foundation system to resist
flotation, collapse, and lateral movement.
ii. Fully enclosed areas formed by foundation
and other exterior walls below the FPG
shall be designed to preclude finished
living space and designed to allow for
the entry and exit of floodwaters to
automatically equalize hydrostatic flood
forces on exterior walls as required for
elevated structures in Section 21-14.05(b)(4).
iii. Flexible skirting and rigid skirting not
attached to the frame or foundation of a
manufactured home are not required to
have openings.
(B) These requirements apply to all manufactured
homes to be placed on a site in an existing
manufactured home park or subdivision that
has not been substantially damaged by a flood:
i. The manufactured home shall be
elevated so that the lowest floor of the
manufactured home chassis is supported
by reinforced piers or other foundation
elevations that are no less than 36 inches
in height above grade and be securely
anchored to an adequately anchored
foundation system to resist flotation,
collapse, and lateral movement.
ii. Fully enclosed areas formed by foundation
and other exterior walls below the FPG
shall be designed to preclude finished
living space and designed to allow for
the entry and exit of floodwaters to
automatically equalize hydrostatic flood
forces on exterior walls as required for
elevated structures in Section 21-14.05(b)(4).
iii. Flexible skirting and rigid skirting not
attached to the frame or foundation of a
manufactured home are not required to
have openings.
(C) Recreational vehicles placed on a site shall
either:
i. Be on site for less than 180 days;
ii. Be fully licensed and ready for highway
use (defined as being on its wheels or
jacking system, is attached to the site
only by quick disconnect type utilities and
security devices, and has no permanently
attached additions); or
iii. Meet the requirements for “manufactured
homes” as stated earlier in this section.
(7) Accessory Structures. Relief to the elevation or
dry floodproofing standards may be granted for
accessory structures. Such structures shall meet
the following standards:
(A) Shall not be used for human habitation.
(B) Shall be constructed of flood resistant
materials.
(C) Shall be constructed and placed on the lot to
offer the minimum resistance to the flow of
floodwaters.
(D) Shall be firmly anchored to prevent flotation.
(E) Service facilities such as electrical and heating
equipment shall be elevated or floodproofed
to or above the FPG.
(F) Shall be designed to allow for the entry and
exit of floodwaters to automatically equalize
hydrostatic flood forces on exterior walls as
required for elevated structures in Section 21-
14.05(b)(4).
(8) Above Ground Gas or Liquid Storage Tanks. All
above ground gas or liquid storage tanks shall be
anchored to prevent flotation or lateral movement.
(c) Standards for Subdivision Proposals
(1) All subdivision proposals shall be consistent with
the need to minimize flood damage;
(2) All subdivision proposals shall have public utilities
and facilities such as sewer, gas, electrical,
and water systems located and constructed to
minimize flood damage;
SOUTH BEND ZONING ORDINANCE 14-19
FlOODPlAIN 21-14.05
Provisions for Flood Hazard Reduction
(3) All subdivision proposals shall have adequate
drainage provided to reduce exposure to flood
hazards;
(4) Base flood elevation data shall be provided
for subdivision proposals and other proposed
development (including manufactured home parks
and subdivisions), which is greater than the lesser
of 50 lots or 5 acres;
(5) All subdivision proposals shall minimize
development in the SFHA and/or limit density of
development permitted in the SFHA; and
(6) All subdivision proposals shall ensure safe access
into/out of SFHA for pedestrians and vehicles
(especially emergency responders).
(d) Critical Facility
Construction of new critical facilities shall be, to the
extent possible, located outside the limits of the
SFHA. Construction of new critical facilities shall be
permissible within the SFHA if no feasible alternative
site is available. Critical facilities constructed within the
SFHA shall have the lowest floor elevated to or above
the FPG at the site. Floodproofing and sealing measures
shall be taken to ensure that toxic substances will not
be displaced by or released into floodwaters. Access
routes elevated to or above the FPG shall be provided
to all critical facilities to the extent possible.
(e) Standards for Identified Floodways
(1) Located within SFHAs, established in Section
21-14.03(b) of this Article, are areas designated as
floodways. The floodway is an extremely hazardous
area due to the velocity of floodwaters, which
carry debris, potential projectiles, and has erosion
potential. If the site is in an identified floodway, the
Floodplain Administrator shall require the applicant
to forward the application, along with all pertinent
plans and specifications, to the Indiana Department
of Natural Resources and apply for a permit for
construction in a floodway. Under the provisions of
IC 14-28-1, a permit for construction in a floodway
from the Indiana Department of Natural Resources
is required prior to the issuance of a local building
permit for any excavation, deposit, construction, or
obstruction activity located in the floodway. This
includes land preparation activities such as filling,
grading, clearing, and paving etc. undertaken
before the actual start of construction of the
structure. However, it does exclude non-substantial
additions/improvements to existing (lawful)
residences in a non-boundary river floodway. (IC
14-28-1-26 allows construction of non-substantial
additions/improvements to residences in a non-
boundary river floodway without obtaining a permit
for construction in the floodway from the Indiana
Department of Natural Resources. Please note that
if fill is needed to elevate an addition above the
existing grade, prior approval for the fill is required
from the Indiana Department of Natural Resources.
(2) No action shall be taken by the Floodplain
Administrator until a permit (when applicable) has
been issued by the Indiana Department of Natural
Resources granting approval for construction in
the floodway. Once a permit for construction in
a floodway or letter of authorization has been
issued by the Indiana Department of Natural
Resources, the Floodplain Administrator may
issue the local Floodplain Development Permit,
provided the provisions contained in Section 21-
14.05 of this Article have been met. The Floodplain
Development Permit cannot be less restrictive than
the permit for construction in a floodway issued
by the Indiana Department of Natural Resources.
However, a community’s more restrictive
regulations (if any) shall take precedence.
(3) No development shall be allowed, which acting
alone or in combination with existing or future
development, that will adversely affect the
efficiency of, or unduly restrict the capacity of
the floodway. This adverse effect is defined as an
increase in the elevation of the regulatory flood
of at least fifteen-hundredths (0.15) of a foot as
determined by comparing the regulatory flood
elevation under the project condition to that under
the natural or pre-floodway condition as proven
with hydraulic analyses.
14-20 May 20, 2026
21-14.05 FlOODPlAIN
Provisions for Flood Hazard Reduction
(4) For all projects involving channel modifications
or fill (including levees) the City of South Bend,
Indiana shall submit the data and request that the
Federal Emergency Management Agency revise
the regulatory flood data per mapping standard
regulations found at 44 CFR § 65.12.
(f) Standards for Identified Fringe
If the site is located in an identified fringe, then the
Floodplain Administrator may issue the local Floodplain
Development Permit provided the provisions contained
in Section 21-14.05 of this Article have been met. The
key provision is that the top of the lowest floor of any
new or substantially improved structure shall be at or
above the FPG.
(g) Standards for SFHAs without Established Base Flood
Elevation and/or Floodways/Fringes
(1) Drainage area upstream of the site is greater than 1
square mile:
(A) If the site is in an identified floodplain where
the limits of the floodway and fringe have not
yet been determined, and the drainage area
upstream of the site is greater than 1 square
mile, the Floodplain Administrator shall require
the applicant to forward the application, along
with all pertinent plans and specifications, to
the Indiana Department of Natural Resources
for review and comment.
(B) No action shall be taken by the Floodplain
Administrator until either a permit for
construction in a floodway or a floodplain
analysis/regulatory assessment citing the 100
year flood elevation and the recommended
Flood Protection Grade has been received
from the Indiana Department of Natural
Resources.
(C) Once the Floodplain Administrator has
received the proper permit for construction in
a floodway (including letters of authorization)
or floodplain analysis/regulatory assessment
approving the proposed development, a
Floodplain Development Permit may be issued
provided the conditions of the Floodplain
Development Permit are not less restrictive
than the conditions received from the Indiana
Department of Natural Resources and the
provisions contained in Section 21-14.05 of this
Article have been met.
(2) Drainage area upstream of the site is less than 1
square mile:
(A) If the site is in an identified floodplain where
the limits of the floodway and fringe have not
yet been determined and the drainage area
upstream of the site is less than 1 square mile,
the Floodplain Administrator shall require the
applicant to provide an engineering analysis
showing the limits of the floodplain and 1
percent annual chance flood elevation for the
site.
(B) Upon receipt, the Floodplain Administrator
may issue the local Floodplain Development
Permit, provided the provisions contained in
Section 21-14.05 of this Article have been met.
(3) The total cumulative effect of the proposed
development, when combined with all other
existing and anticipated development, shall not
increase the regulatory flood more than 0.14 of
1 foot and shall not increase flood damages or
potential flood damages.
(h) Standards for Flood Prone Areas
All development in known flood prone areas not
identified on FEMA maps, or where no FEMA published
map is available, shall meet general standards as
required per Section 21-14.05.
SOUTH BEND ZONING ORDINANCE 14-21
FlOODPlAIN 21-14.06
Variance Procedures
Section 21-14.06: Variance Procedures
(a) Designation of Variance and Appeals Board
The Board of Zoning Appeals (BZA) shall hear and
decide appeals and requests for variances from
requirements of this Article.
(b) Duties of Variance and Appeals Board
The Board of Zoning Appeals shall hear and decide
appeals when it is alleged an error in any requirement,
decision, or determination is made by the Floodplain
Administrator in the enforcement or administration of
this Article. Any person aggrieved by the decision of the
Board of Zoning Appeals may appeal such decision to
the St. Joseph County Circuit or Superior Court.
(c) Variance Procedures
In passing upon such applications, the Board of Zoning
Appeals shall consider all technical evaluations,
all relevant factors, all standards specified in other
sections of this Article, and:
(1) The danger of life and property due to flooding or
erosion damage;
(2) The susceptibility of the proposed facility and its
contents to flood damage and the effect of such
damage on the individual owner;
(3) The importance of the services provided by the
proposed facility to the community;
(4) The necessity of the facility to a waterfront
location, where applicable;
(5) The availability of alternative locations for the
proposed use which are not subject to flooding or
erosion damage;
(6) The compatibility of the proposed use with existing
and anticipated development;
(7) The relationship of the proposed use to the
comprehensive plan and floodplain management
program for that area;
(8) The safety of access to the lot in times of flood for
ordinary and emergency vehicles;
(9) The expected height, velocity, duration, rate of rise,
and sediment of transport of the floodwaters at the
site; and,
(10) The costs of providing governmental services
during and after flood conditions, including
maintenance and repair of public utilities and
facilities such as sewer, gas, electrical, and water
systems, and streets and bridges.
(d) Conditions for Variances
(1) Variances shall only be issued when there is:
(A) A showing of good and sufficient cause;
(B) A determination that failure to grant the variance
would result in exceptional hardship; and,
(C) A determination that the granting of a
variance will not result in increased flood
heights, additional threats to public safety,
extraordinary public expense, create
nuisances, cause fraud or victimization of
the public, or conflict with existing laws or
ordinances.
(2) No variance for a residential use within a floodway
subject to Section 21-14.05(e) or Section 21-14.05(g)
(1) of this Article may be granted.
(3) Any variance granted in a floodway subject to
Section 21-14.05(e) or Section 21-14.05(g)(1) of
this Article will require a permit from the Indiana
Department of Natural Resources.
(4) Variances to the Provisions for Flood Hazard
Reduction of Section 21-14.05(b) of this Article
may be granted only when a new structure is to
be located on a lot of one-half acre or less in size,
contiguous to and surrounded by lots with existing
structures constructed below the flood protection
grade.
(5) Variances shall only be issued upon a
determination that the variance is the minimum
necessary, considering the flood hazard, to afford
relief.
(6) Variances may be granted for the reconstruction
or restoration of any structure individually listed
on the National Register of Historic Places or
the Indiana State Register of Historic Sites and
Structures.
14-22 May 20, 2026
21-14.06 FlOODPlAIN
Variance Procedures
(7) Any applicant to whom a variance is granted shall
be given written notice specifying the difference
between the Flood Protection Grade and the
elevation to which the lowest floor is to be built and
stating that the cost of the flood insurance will be
commensurate with the increased risk resulting
from the reduced lowest floor elevation [see
Section 21-14.06(e)].
(8) The Floodplain Administrator shall maintain the
records of appeal actions and report any variances
to the Federal Emergency Management Agency or
the Indiana Department of Natural Resources upon
request [see Section 21-14.06(e)].
(e) Variance Notification
Any applicant to whom a variance is granted that allows
the lowest floor of a structure to be built below the
flood protection grade shall be given written notice
over the signature of a community official that:
(1) The issuance of a variance to construct a structure
below flood protection grade will result in
increased premium rates for flood insurance up
to amounts as high as $25 for $100 of insurance
coverage; and;
(2) Such construction below the flood protection
grade increases risks to life and property. A copy
of the notice shall be recorded by the owner in the
office of the St. Joseph County Recorder and shall
be recorded in a manner so that it appears in the
chain of title of the affected parcel of land.
The Floodplain Administrator shall maintain a
record of all variance actions, including justification
for their issuance.
(f) Historic Structure
Variances may be issued for the repair or rehabilitation
of historic structures upon a determination that the
proposed repair or rehabilitation will not preclude the
structure’s continued designation as a historic structure
and the variance is the minimum to preserve the
historic character and design of the structure.
(g) Special Conditions
Upon the consideration of the factors listed in Section
21-14.06, and the purposes of this Article, the Board
of Zoning Appeals may attach such conditions to the
granting of variances as it deems necessary to further
the purposes of this Article.