Environment
Hydrology, terrain, and environmental context for Alaska.
Datasets
- National Hydrography (NHD) — Rivers, streams, lakes
- 3DEP Elevation — National DEM, slope, hillshade
- USGS Watersheds (HUC) — Drainage boundaries
- USGS Stream Gauges — Real-time streamflow
- National Wetlands Inventory — Wetlands extent
- NOAA Sea Ice (ASIP) — Arctic sea ice charts
- USGS Glacier Inventory — Glacier extent and change
- FEMA Flood Hazard (NFHL) — Flood zones