San Bernardino County, California
San Bernardino County covers 20,068 square miles of land. Below is what the Isopleth API returned at the Census Bureau's interior point for the county (34.85666, -116.18157) on 2026-10-29. The ground sits at 396 m (1,298 ft) on a 0.0° slope, the mapped soil is somewhat excessively drained, it is outside a mapped FEMA floodplain, the nearest 69 kV+ substation is 20.4 km (12.7 mi) away and a major road is 14.6 km (9.1 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 |
|---|---|---|
| FEMA flood zone | D | FEMA_NFHL Federal Emergency Management Agencyvintage 06071C_STUDY2 |
| Inside a mapped floodplain | No | FEMA_NFHL Federal Emergency Management Agencyvintage 06071C_STUDY2 |
| Wildfire, annual frequency | 0.00082 events a year | FEMA_NRI Federal Emergency Management Agencyvintage December 2025 |
| Tornado, annual frequency | 0.13 events a year | FEMA_NRI Federal Emergency Management Agencyvintage December 2025 |
| Hail, annual frequency | 0.068 events a year | FEMA_NRI Federal Emergency Management Agencyvintage December 2025 |
| Current drought category | D0 | 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 | Yes | USFWS_NWI U.S. Fish and Wildlife Service |
| Nearest mapped wetland | 0 m | USFWS_NWI U.S. Fish and Wildlife Service |
| Elevation | 396 m (1,298 ft) | USGS_3DEP_COG U.S. Geological Surveyvintage 3DEP 1/3 arc-second seamless DEM |
| Slope | 0.0° | USGS_3DEP_COG U.S. Geological Survey |
| Soil drainage | Somewhat excessively drained | USDA_SSURGO U.S. Department of Agriculturevintage SSURGO CA695 mukey 3457469 |
| Soil hydrologic group | A | USDA_SSURGO U.S. Department of Agriculturevintage SSURGO CA695 mukey 3457469 |
| Farmland class | Prime | USDA_SSURGO U.S. Department of Agriculturevintage SSURGO CA695 mukey 3457469 |
| Land use | Non-Forest Wetland | USFS_LCMS USDA Forest Servicevintage USFS LCMS CONUS 2025 annual (30 m) |
| Crop or cover (CDL) | Barren | 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) | 84 mm (3 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 | 158 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) | 5.83 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 | 4.7 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 | 22% | 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+) | 20.4 km (12.7 mi) | EIA_POWER U.S. Energy Information Administration |
| Nearest gas pipeline | 6.9 km (4.3 mi) | EIA_ATLAS U.S. Energy Information Administration |
| Electric utility | COLORADO RIVER INDIAN IRR PROJ | EIA_POWER U.S. Energy Information Administrationvintage HIFLD Electric Retail Service Territories |
| In a public water service area | No | EPA_CWS_SERVICE_AREAS U.S. Environmental Protection Agencyvintage V3.0 (2026-03-17) |
| Depth to water, nearest monitored well | 31.0 m (102 ft) | USGS_NWIS_OGC U.S. Geological Surveyvintage USGS Water Data discrete groundwater-level field measurements (latest per well) |
| Nearest major road | 14.6 km (9.1 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: 3,719,435 parcels in 5 of California's 58 counties, loaded county by county from layers each county publishes for reuse: Los Angeles (2,433,287), Santa Clara (504,995), Sacramento (502,215), San Francisco (227,700), Napa (51,238). San Bernardino County is not one of them yet. Refreshed quarterly.
Share of parcels with each column filled: site address 95%, total value 65%, land use 80%, zoning 6%, year built 73%. Not published here: owner name, sale date.
Look up your own site
curl https://api.isopleth.dev/v1/fetch -H "Authorization: Bearer $ISOPLETH_KEY" \
-H "Content-Type: application/json" \
-d '{"lat": 34.856661, "lng": -116.181571, "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 San Bernardino County, California].”
Buying land here? Check the Land’s San Bernardino County page shows what its $29 report checks, built on these same Isopleth fields.
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