Maps & Data
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U.S. Geological Survey
USGS StreamStats
Interactive map-based web application that computes streamflow statistics for any location on a stream, supporting flood risk analysis…
Maps & Data
Maps & Data
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Maps & Data
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U.S. Geological Survey
USGS National Hydrography Dataset (NHD)
Authoritative GIS database of U.S. surface water features — streams, rivers, lakes, ponds, wetlands — used as the…
Maps & Data
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NOAA Office for Coastal Management
NOAA Digital Coast
Federal platform providing coastal and Great Lakes data, training, and tools — relevant to Pennsylvania's Lake Erie shoreline…
Maps & Data
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U.S. Environmental Protection Agency
EPA EnviroAtlas
Interactive mapping platform providing ecosystem services and environmental data at national, community, and watershed scales.
Maps & Data
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Penn State Institutes of Energy and the Environment
Pennsylvania Spatial Data Access (PASDA)
Pennsylvania's official public GIS data clearinghouse, hosting hundreds of downloadable statewide and local spatial data layers relevant to…
Experts & Providers
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Academy of Natural Sciences of Drexel University
Academy of Natural Sciences — Patrick Center for Environmental Research
Leading freshwater research institute providing biomonitoring, water quality analysis, and stream ecology expertise for regional watershed projects.
Experts & Providers
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Western Pennsylvania Conservancy / PA DCNR partnership
Pennsylvania Natural Heritage Program (PNHP)
State biodiversity data program providing species and habitat information critical for watershed conservation planning and project siting.
Maps & Data
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Esri
Esri ArcGIS for Nonprofits
Discounted ArcGIS software licenses, training, and support for qualifying nonprofit and conservation organizations.
Maps & Data
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Chesapeake Bay Program
Chesapeake Bay Program — Data and Visualization Tools
Federal-state partnership data hub providing watershed health indicators, restoration tracking, and water quality data for the Chesapeake Bay…
Maps & Data
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PA Department of Environmental Protection
PA DEP eMapPA
Pennsylvania DEP's interactive web mapping application showing permits, facilities, monitoring sites, abandoned mines, and impaired waters statewide.
Maps & Data
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U.S. EPA
EPA How’s My Waterway
EPA tool that provides plain-language water quality information for any local waterway in the U.S. based on state…
Maps & Data
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U.S. Geological Survey
USGS National Water Information System (NWIS)
Comprehensive USGS database providing real-time and historical streamflow, groundwater, and water quality data for sites nationwide.