Alaska location data
Isopleth answers questions about any coordinate or street address in Alaska with 351 public-data fields from 95 sources: flood and wildfire risk, soils and slope, the power grid, water and roads, climate, and county economics. Each value carries its source, license and vintage. Use it from the REST API or through the MCP server in Claude, ChatGPT, Cursor and other assistants.
Parcel coverage in Alaska
Parcel records: not offered in Alaska. Not statewide (20 local sources); licensing is per originating source. Every point field on this page still works at any coordinate in Alaska; see parcel coverage for the 35 states plus DC we cover.
Sample values in Alaska
What our API returned at the Census Bureau's interior point of Alaska's 3 largest counties by land area, computed 2026-10-29. One point is not a whole county: values can change within a few hundred meters, so look up your own site. "No data" means the dataset has nothing at that point.
| field | Yukon-Koyukuk Census Area | North Slope Borough | Bethel Census Area |
|---|---|---|---|
| Hazards | |||
| Inside a mapped floodplain | No | No | No |
| Wildfire, annual frequency | 0.011 events a year | 0.00011 events a year | 0.0012 events a year |
| Tornado, annual frequency | 0.00030 events a year | 0.00070 events a year | 0.044 events a year |
| Hail, annual frequency | 0.000045 events a year | 0 events a year | 0.0010 events a year |
| On a mapped wetland | No | no data | No |
| Nearest mapped wetland | 31 m | no data | 284 m |
| Land | |||
| Elevation | 622 m (2,040 ft) | 155 m (509 ft) | 181 m (594 ft) |
| Slope | 17.9° | 3.8° | 0.6° |
| Soil drainage | Well drained | Somewhat poorly drained | Well drained |
| Soil hydrologic group | A | B/D | B |
| Farmland class | Prime | Prime | Prime |
| On protected land (PAD-US) | No | Yes | Yes |
| Surface manager | Private or unknown | Blm | Fws |
| Climate & energy | |||
| Solar resource (GHI) | 2.55 kWh/m²/day | 2.15 kWh/m²/day | 2.47 kWh/m²/day |
| Mean wind speed at 100 m | 7.8 m/s | 5.8 m/s | 7.0 m/s |
| Infrastructure | |||
| Nearest substation (69 kV+) | 151.7 km (94.3 mi) | no data | no data |
| Electric utility | GWITCHYAA ZHEE UTILITY CO | NORTH SLOPE BOROUGH POWER & LIGHT | ANIAK LIGHT & POWER CO INC |
| In a public water service area | No | No | No |
| Nearest major road | 23.4 km (14.6 mi) | no data | no data |
| Community | |||
| In an Opportunity Zone | Yes | Yes | No |
County pages
- Yukon-Koyukuk Census Area 145,769 sq mi of land
- North Slope Borough 88,793 sq mi of land
- Bethel Census Area 40,661 sq mi of land
Datasets that returned data at these points
| source | fields |
|---|---|
BLM_SMA Bureau of Land Management | surface_management_agency |
EIA_POWER U.S. Energy Information Administration | electric_utility_service_territory, nearest_substation_distance_m |
EPA_CWS_SERVICE_AREAS U.S. Environmental Protection Agency | within_water_service_area |
FEMA_NFHL Federal Emergency Management Agency | within_floodplain_polygon |
FEMA_NRI Federal Emergency Management Agency | hail_annual_frequency, tornado_annual_frequency, wildfire_annual_frequency |
GLOBAL_WIND_ATLAS_V3 See source_url | mean_wind_speed_100m_ms |
HUD_OPPORTUNITY_ZONES U.S. Department of Housing and Urban Development | in_opportunity_zone |
JRC_PVGIS_NSRDB See source_url | ghi_annual_kwh_m2_day |
OVERTURE_TRANSPORTATION © Overture Maps Foundation, © OpenStreetMap contributors | nearest_major_road_distance_m |
PAD_US USGS Protected Areas Database of the United States (PAD-US) | intersects_protected_area |
USDA_SSURGO U.S. Department of Agriculture | prime_farmland_classification, soil_drainage_class, soil_hydrologic_group |
USFWS_NWI U.S. Fish and Wildlife Service | intersects_wetland, nearest_wetland_distance_m |
USGS_3DEP_COG U.S. Geological Survey | elevation, slope_degrees |
These are only the sources behind the fields sampled here. The full list is on Sources & licenses and every field is in the field catalog.
What people use it for in Alaska
- Land buyers: screen a lot for flood zone, wetlands, slope, soils, road and water access before a site visit. Buyers who want it written up can order a $29 report on Check the Land, which is built on Isopleth.
- Solar, wind and data-center siting: distance to transmission and substations, solar and wind resource, protected land.
- Insurance and lending: hazard frequencies and floodplain status for every address in a book.
- Real estate and research: county income, growth and house-price trends next to on-the-ground facts.
See use cases for prompts and the exact fields.
Try it
curl https://api.isopleth.dev/v1/fetch -H "Authorization: Bearer $ISOPLETH_KEY" \
-H "Content-Type: application/json" \
-d '{"lat": 65.375656, "lng": -151.578176, "preset": "site_selection"}'
Or ask your assistant: “Using Isopleth, what are the flood zone, slope and soil drainage at 65.3757, -151.5782?”
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