Elevation, slope, flood zone and wetlands screening for any US coordinate, plus distance, area and sun-time helpers.
payments ON MAINNET (real money) · 8 live endpoints
| Endpoint | Price | What it answers |
|---|---|---|
GET /distance-bearing | $0.02 | Great-circle distance (miles, km, feet, nautical miles) and initial compass bearing between two latitude/longitude points. |
GET /elevation-profile | $0.03 | Elevation profile along a line between two US points: relief, ascent, descent, steepest grade and a flat/steep verdict. |
GET /elevation | $0.02 | Ground elevation in feet and meters at a US latitude and longitude from USGS 3DEP, with data-coverage check. |
GET /flood-zone | $0.02 | FEMA flood hazard zone at a US latitude and longitude: high-risk (A/AE/V), moderate or minimal, with base flood elevation. |
GET /polygon-area | $0.02 | Area in acres, hectares and square meters and perimeter of a polygon from lat,lon vertices, e.g. a parcel or flight area. |
GET /site-screen | $0.05 | First-look site screen for a US coordinate: elevation, FEMA flood zone and mapped wetlands combined, with flags. |
GET /sun-times | $0.02 | Sunrise, sunset, civil twilight and day length for a latitude/longitude and date, in UTC and a chosen UTC offset. |
GET /wetlands-check | $0.02 | Is a US point inside a mapped wetland? National Wetlands Inventory type and size, as a permitting heads-up. |
GET /catalog returns this list as JSON. Activity hub · uptime.
Screening results computed from USGS 3DEP elevation, FEMA National Flood Hazard Layer and US Fish and Wildlife National Wetlands Inventory public data, provided as is. Maps can be outdated or imprecise. This is NOT a land survey, flood zone determination, wetland delineation, permit or legal opinion; do not rely on it for construction, insurance, lending or regulatory decisions. Not affiliated with or endorsed by USGS, FEMA or USFWS. Each answer gives its source endpoint (sourceUrl) and access time (asOf). Every paid response carries a disclaimer field.