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NHD Stream Order - Pennsylvania

2026 - WeConservePA


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API
REST: https://mapservices.pasda.psu.edu/server/rest/services/pasda/WeConservePA/MapServer
WMS: https://mapservices.pasda.psu.edu/server/services/pasda/WeConservePA/MapServer/WMSServer?request=GetCapabilities&service=WMS
ADDITIONAL RESOURCES
n/a
ABSTRACT
This is the USGS National Hydrology Dataset Plus High Resolution EPA Snapshot 2022 Data for Pennsylvania [https://www.epa.gov/waterdata/get-nhdplus-national-hydrography-dataset-plus-data]. HUC04, HUC06, and HUC08 are calculated from Reach Codes. Dataset dissolved by GNIS Name and HUC codes. Tributaries are grouped by HUC08 codes and labeled with Subbasin names. See https://water.usgs.gov/GIS/wbd_huc8.pdf for full hierarchy. The Delaware River polyline was supplemented using Open Street Map Waterways layer for continuity.