Owyhee County, Idaho
Owyhee County covers 7,668 square miles of land. Below is what the Isopleth API returned at the Census Bureau's interior point for the county (42.57285, -116.18969) on 2026-10-29. The ground sits at 1,748 m (5,736 ft) on a 1.7° slope, the mapped soil is well drained, it is outside a mapped FEMA floodplain, the nearest 69 kV+ substation is 44.6 km (27.7 mi) away and a major road is 23.0 km (14.3 mi) away. Values describe that one point, not the whole county; look up your own address or coordinates for your site.
Sample point values
| field | value | source |
|---|---|---|
| Inside a mapped floodplain | No | FEMA_NFHL Federal Emergency Management Agency |
| Wildfire, annual frequency | 0.019 events a year | FEMA_NRI Federal Emergency Management Agencyvintage December 2025 |
| Tornado, annual frequency | 0.28 events a year | FEMA_NRI Federal Emergency Management Agencyvintage December 2025 |
| Hail, annual frequency | 0.14 events a year | FEMA_NRI Federal Emergency Management Agencyvintage December 2025 |
| Current drought category | D4 | USDM_CURRENT The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, and the National Oceanic and Atmospheric Administration. Map courtesy of NDMC.vintage US Drought Monitor map valid 20261020 |
| On a mapped wetland | No | USFWS_NWI U.S. Fish and Wildlife Service |
| Nearest mapped wetland | 45 m | USFWS_NWI U.S. Fish and Wildlife Service |
| Elevation | 1,748 m (5,736 ft) | USGS_3DEP_COG U.S. Geological Surveyvintage 3DEP 1/3 arc-second seamless DEM |
| Slope | 1.7° | USGS_3DEP_COG U.S. Geological Survey |
| Soil drainage | Well drained | USDA_SSURGO U.S. Department of Agriculturevintage SSURGO ID675 mukey 486198 |
| Soil hydrologic group | D | USDA_SSURGO U.S. Department of Agriculturevintage SSURGO ID675 mukey 486198 |
| Farmland class | Statewide importance | USDA_SSURGO U.S. Department of Agriculturevintage SSURGO ID675 mukey 486198 |
| Land use | Other | USFS_LCMS USDA Forest Servicevintage USFS LCMS CONUS 2025 annual (30 m) |
| Crop or cover (CDL) | Grass/Pasture | USDA_CDL U.S. Department of Agriculturevintage USDA CDL 2025 (30 m) |
| Tree canopy | 0% | USFS_NLCD_TCC USDA Forest Servicevintage USFS/MRLC NLCD Tree Canopy Cover (latest annual, 30 m) |
| On protected land (PAD-US) | Yes | PAD_US USGS Protected Areas Database of the United States (PAD-US)vintage USGS PAD-US 4.1 (Protection Mechanism Category combined layer) |
| Surface manager | Blm | BLM_SMA Bureau of Land Management |
| Annual precipitation (normal) | 320 mm (13 in) | NOAA_NCEI_NORMALS_GRIDDED National Oceanic and Atmospheric Administrationvintage NOAA NCEI 1991-2020 gridded (nClimGrid) monthly normals v1.0, annual layers |
| Days above 32 °C a year | 12 days | NOAA_NCEI_NCLIMGRID_DAILY National Oceanic and Atmospheric Administrationvintage NOAA nClimGrid-Daily v1.0 (scaled), 1991-2020 mean annual day counts |
| Solar resource (GHI) | 4.62 kWh/m²/day | NREL_SOLAR_RESOURCE_V1 NREL Solar Resource Data (NSRDB)vintage NREL PSM v3 multiyear annual average (1998-2016, ~4 km, Americas) |
| Mean wind speed at 100 m | 7.5 m/s | NREL_WIND_TOOLKIT NREL WIND Toolkit (Draxl et al., 2015)vintage NREL WIND Toolkit CONUS v1.0.0, 2007-2013 (5-min, 2 km) |
| Wind capacity factor | 33% | NREL_REV_LANDBASED_WIND_SC_2024 NREL reV supply curves, Open Energy Data Initiative (OEDI)vintage NREL reV land-based wind SC 2024 (Open access) |
| Nearest substation (69 kV+) | 44.6 km (27.7 mi) | EIA_POWER U.S. Energy Information Administration |
| Nearest gas pipeline | 3.0 km (1.9 mi) | EIA_ATLAS U.S. Energy Information Administration |
| In a public water service area | No | EPA_CWS_SERVICE_AREAS U.S. Environmental Protection Agencyvintage V3.0 (2026-03-17) |
| Nearest major road | 23.0 km (14.3 mi) | OVERTURE_TRANSPORTATION © Overture Maps Foundation, © OpenStreetMap contributorsvintage 2026-10-21.0 |
| In an Opportunity Zone | No | HUD_OPPORTUNITY_ZONES U.S. Department of Housing and Urban Development |
Fields with no data at this point are left out. See the field catalog for all 351 fields.
Parcels
Parcel records: not offered in Idaho. Only 13 of 44 counties; terms defer to the Idaho Parcel Data Exchange Standard (not reviewed). Every point field on this page still works at any coordinate in Idaho; see parcel coverage for the 35 states plus DC we cover.
Look up your own site
curl https://api.isopleth.dev/v1/fetch -H "Authorization: Bearer $ISOPLETH_KEY" \
-H "Content-Type: application/json" \
-d '{"lat": 42.572851, "lng": -116.18969, "preset": "site_selection"}'
Or ask your assistant through the MCP server: “Using Isopleth, check flood zone, wetlands, soils and distance to power for [your address in Owyhee County, Idaho].”
Buying land here? Check the Land’s Owyhee County page shows what its $29 report checks, built on these same Isopleth fields.
More in Idaho: Idaho County · Custer County · Idaho overview · all states