Flood control.
Indianapolis-Marion County Revised Code § 741-313
in effectSec. 741-313. - Flood control.
A. All development shall comply with all provisions of Section 742-203 (Flood Control zoning district) and Flood Damage Prevention provisions of the Revised Code of the City of Indianapolis-Marion County.
B. The governing base flood elevation for the site (including the source of the base flood elevation value) and delineations of the Floodway and Floodway Fringe zones shall be indicated on the plans, primary plat and the plat to be recorded.
C. For Zone AE areas, the plans and the plat must show the BFE topographic line the plan and plat must show the delineation study with the floodway and floodway fringe lines shown on the FIRM maps. Plans showing elevation of the top of the planned lowest floor (including basement) of all proposed structures in zones A, AH, and AE.
D. For Zone AO, plans must show the height of the top of the lowest floor above the highest adjacent grade.
E. Elevations should be in NAVD 88.
F. Flood protection grade denoted for each building pad and floor; volumetric calculations demonstrating compensatory storage; and, for each lot located in a Special Flood Hazard area, a plan note identifying the flood control zone in which it is located and the requirements and limitations.
(G.O. 64, 2015, § 2; G.O. 23, 2026, § 6)
Source: Consolidated City of Indianapolis and Marion County, Revised Code (Municode Library, library.municode.com)URL: https://library.municode.com/in/indianapolis_-_marion_county/codes/code_of_ordinances?nodeId=TITIIIPUHEWE_CH741SURE_ARTIIIDEINST_S741-313FLCOFetched: 10/27/2026