|| Dams, levees, diversion locations, utility locations, wells, etc.
|| NHD, NHDplus, watershed boundaries, aquifer boundaries, wetlands, etc.
| Water Quality
|| All constituent measurements for surface water and groundwater quality
|| 303d Assessment, facility permits, compliance, violations, and enforcement actions, TMDLs, regulated and unregulated contaminant occurrence, consumer confidence reports, etc.
| Water Quantity
|| Evaporation, evapotranspiration
| Extreme Events
|| Flood boundary maps and hazard layers, flood insurance rate maps, flood risk maps, Hazus, flood stage and frequency, Palmer drought indices, national drought map, etc.
| Glacial and Snow
|| Glacier extent and speed, ice sheet elevation, temperature, and thickness; snow depth, snow water equivalent, snowfall, etc.
|| Depth to groundwater, flow, storage, etc.
|| Air/Atmospheric temperature, relative and specific humidity, Wind speed and direction, etc.
|| Amount, frequency, intensity
|| Soil moisture and temperature, freeze/thaw/melt status
| Surface Water
|| Stream stage and discharge, rating curves, streambed elevation, stream density and length, etc.
| Water Use
|| Power generation; plant capacity, ownership, and type; potential capacity from non-powered dams and undeveloped streams, etc.
|| Area irrigated and source; canal discharge, diversion, and stage; irrigation water applied, number of operations, water irrigation supply condition, etc.
|| Water rights, water pumped, water use by sector, water supply source
|| Quantity, quality, and use of water supplied by public municipalities, as well as domestic water usage
| Management Plans
|| Includes state and regional watershed, aquifer, and water supply management plans