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FEMA Flood Zone Lookup by Coordinate
x402
FEMA Flood Zone Lookup by Coordinate is a paid API for AI agents from land-survey.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Returns the FEMA flood hazard zone classification (high-risk A/AE/V, moderate, or minimal) and base flood elevation for a given US latitude/longitude.
Price / call$0.02
Success—
StatusUnknown
How this service works
FEMA flood hazard zone at a US latitude and longitude: high-risk (A/AE/V), moderate or minimal, with base flood elevation.
Output
Returns a JSON object containing the flood zone code (e.g. AE, X, V), zone subtype, whether the location is within a Special Flood Hazard Area (boolean), base flood elevation in feet, number of overlapping zones, a plain-English verdict and summary, the data source URL, the as-of date of the data, and a disclaimer. May also include a list of reasons and a degraded flag if data coverage is partial.
Example use cases
Pre-purchase flood risk check
“Before we finalize the offer on that land parcel in Houston, can you check whether coordinates 29.7604° N, 95.3698° W fall inside a FEMA Special Flood Hazard Area and what zone it is?”
Flood insurance requirement screening
“We're evaluating a construction site at 30.3322° N, 81.6557° W — is it in a FEMA AE or V flood zone where lenders would require flood insurance, and what's the base flood elevation?”
Permitting site feasibility check
“For our development project near lat 38.8977° N, lon 77.0366° W, pull the FEMA flood zone classification and base flood elevation so we know if we need to account for floodplain regulations.”
Technical details
Endpoint
GEThttps://land-survey.x402tookit.com/flood-zone?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative FEMA flood zone classification (zone code, SFHA flag, base flood elevation) for a specific US coordinate, especially for real estate due diligence, construction permitting, flood insurance determination, or environmental site screening. It is distinct from general elevation lookups and returns FEMA-specific regulatory zone data rather than terrain elevation. For a combined first-look screen including elevation and wetlands, consider the sibling composite endpoint instead.
Side effects
- Coordinates outside the United States return no data or an error
- Location not yet mapped in the NFHL returns null zone fields or degraded=true
- Invalid lat/lon values (out of range) cause a validation error
- FEMA data service temporarily unavailable results in a degraded or error response
- Coastal or recently remapped areas may have stale zone designations flagged by asOf date
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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