Small-scale GIS data layers compiled by the National Park Service for a Baseline Water Quality Data Inventory and Analysis Report. The layers depict locations of water quality monitoring stations, industrial discharges, drinking intakes, water gages, and water impoundments, based on retrievals from six EPA national databases. Data layers generally include roads, hydrography, political boundaries, USGS quadrangle outlines, hydrologic units, and trails.
Use Cases
- Mapping water quality monitoring station locations based on EPA STORET database retrievals.
- Analyzing potential pollution sources based on industrial facility discharge data.
- Modeling watershed hydrology based on hydrography and hydrologic unit layers.
- Assessing infrastructure proximity to water resources based on roads, drinking intakes, and water impoundment data.
Strengths
- Data compiled from six authoritative EPA national databases.
- Layers are generally at a consistent 1:100,000 scale.
- Includes multiple thematic layers such as hydrography, political boundaries, and trails.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- The specific layers included vary depending on availability.
Provenance
- Source
- National Park Service Servicewide Inventory and Monitoring Program and Water Resources Division.
- Collection Method
- Compiled for a Baseline Water Quality Data Inventory and Analysis Report using data from EPA databases.
- Time Range
- null
- Freshness
- Last updated 2026-03-04 01:24:33.654982; freshness should be verified.
- Geography
- Wolf Trap Farm Park, Virginia, United States.