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Vanderburgh County, IN Environmental Rules: Flood Zones (2026)

Significant Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

FEMA flood zone rules in Vanderburgh County, IN, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.

Key Facts

Governing chapter: County Code Ch. 18.04
Permit required: Before any SFHA development
Administrator: Building Commission employee
Permit validity: 1 year from plan approval
FIRM effective date: January 30, 2021
Penalty basis: Fine schedule, § 15.08.170

FEMA Flood Zone Lookup

FEMA assigns every parcel in the U.S. a flood-hazard designation on its Flood Insurance Rate Maps (FIRMs). Zones starting with A or V are high-risk Special Flood Hazard Areas where federally backed mortgages require NFIP flood insurance. Zone X indicates moderate-to-minimal risk, where insurance is optional but often recommended. Your specific zone determines insurance cost, build elevation, and permit requirements in Vanderburgh County, IN.

Zone	What it means	NFIP required?
A	High-risk flood area; 1% annual chance flood, no detailed analysis.	Yes
AE	High-risk; same as A but with established Base Flood Elevations.	Yes
AH	High-risk shallow flooding (1-3 ft), usually ponding.	Yes
AO	High-risk shallow flooding (1-3 ft) with sheet flow on sloping terrain.	Yes
V	High-risk coastal zone subject to wave action (no BFE).	Yes
VE	High-risk coastal zone with wave action and established BFEs.	Yes
X (shaded)	Moderate risk; between the 1% and 0.2% annual chance flood.	Recommended
X	Minimal risk; outside the 0.2% annual chance floodplain.	No

Look up Vanderburgh County, IN on the FEMA flood map

FEMA maps update periodically; verify zone before buying flood insurance or building.

Summary

Vanderburgh County requires a Floodplain Development Permit before any grading, filling, construction or structural alteration in a mapped Special Flood Hazard Area. The Building Commission's Floodplain Administrator reviews every application against the county's Flood Insurance Rate Map dated January 30, 2021.

City-specific rules exist: Evansville has its own flood zones rules that differ from Vanderburgh County's county-level regulations. If you live in Evansville, check the city-specific page instead.

C. Establishment of Floodplain Development Permit. A Floodplain Development Permit shall be required in conformance with the provisions of this ordinance prior to the commencement of any Development activities in areas of special flood hazard. D. Compliance. (1) No Structure shall hereafter be located, extended, converted, or structurally altered within the SFHA without full compliance with the terms of this ordinance and other applicable regulations. ... (3) No land or stream within the SFHA shall hereafter be altered without full compliance with the terms of this ordinance and other applicable regulations.

View official code

Full Breakdown

04 of the county code applies to all areas of special flood hazard (SFHAs) within Vanderburgh County's jurisdiction, using the AE and A zones delineated on the Vanderburgh County, Indiana and Incorporated Areas Flood Insurance Rate Map dated January 30, 2021, plus any IDNR Best Available Flood Layer data where the FIRM does not show a floodway. 030(D) bars locating, extending, converting or structurally altering any structure, or altering any land or stream, within the SFHA without full compliance. 040(A)) and evaluates applications that must include scaled site plans, elevation benchmarks, flood-resistant materials specifications and, for work in a regulatory floodway, forwarding of plans to IDNR for a construction-in-floodway approval under the Flood Control Act, IC 14-28-1.

A permit is valid for one year from plan approval. 04 through the joint Evansville-Vanderburgh County Building Commission, whose records are kept at the Civic Center Complex, Room 310, in Evansville.

Violations & Fines

Failing to obtain a Floodplain Development Permit, or failing to comply with permit conditions or a variance, is a violation treated as a common nuisance under Section 18.04.030(I), enforced under the fine schedule in Section 15.08.170. Each day the violation continues counts as a separate offense, and the Area Plan Commission or Floodplain Administrator will notify the owner that the violation is a willful act that can suspend Standard Flood Insurance Policy coverage.

Frequently Asked Questions

Do I need a permit to fill or grade land in a Vanderburgh County flood zone?

Yes. Section 18.04.030(C) requires a Floodplain Development Permit before any development activity, including filling, grading, clearing or paving, begins in an area of special flood hazard, whether or not a structure is involved.

Who reviews floodplain permit applications in Vanderburgh County?

An employee of the Building Commission of Vanderburgh County, designated as the Floodplain Administrator under Section 18.04.040(A), reviews applications, issues or denies permits, and forwards floodway projects to IDNR for state approval under the Flood Control Act.

What happens if I build in the floodplain without a permit?

Section 18.04.030(I) makes the failure a violation treated as a common nuisance under the county's fine schedule at Section 15.08.170, with each day of continued violation counted as a separate offense and possible suspension of flood insurance coverage.

Sources & Official References

[1]Vanderburgh County, IN Code of Ordinances, Ch. 18.04

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All Vanderburgh County rules

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Flood Zones in Cities Across Vanderburgh County

Evansville, IN