Valley Identification Tool - US EPA Regions 1, 2, 3, 9, 10 - 2024
Description
The Valley Identification Tool web mapping application includes Valleys (locations that are lower than surrounding areas, derived from USGS 30m DEM), population in valleys (reallocated within Census block groups), and households heated primarily with wood (American Community Survey, most recent at time of processing), which are summarized by Census County Subdivision. Other layers included in the Valley Identification Tool web map include 2017 National Emissions Inventory (NEI) facilities, Tribal areas, air monitors, Justice40, and EJScreen data.
Created by US EPA Region 1 GIS Center; and implemented in EPA Regions 2, 3, 9 and 10 by regional GIS staff, US EPA Office of Mission Support (OMS).