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Shenandoah River Accumulated Wastewater Ratio


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Kandel, C.M., Rapp, J.L., and Barber, L.B., 2019, Shenandoah River Accumulated Wastewater Ratio (ver. 2.0, February 2019): U.S. Geological Survey data release,


Incedental wastewater reuse from streams that receive discharges from Wastewater Treatment Facilities (WWTF) has the potential to be a significant contributor of Endocrine Disrupting Chemicals. An ArcGIS model of WWTFs, NHDPlus Version 2 stream networks (USGS and EPA 2012), and gage stations across the Shenandoah River watershed was created to calculate accumulated wastewater in percent of streamflow (ACCWW%) and Predicted Environmental Concentrations (PECs) of select constituents. Virginia and West Virginia Pollutant Discharge Elimination System (VPDES, WVPDES) discharge facilities, outfall locations, and stream gages were spatially joined to the nearest river segment. Wastewater inputs from outfall locations were summarized by river [...]


Attached Files

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“Browse Graphic for display on Landing Page”
thumbnail 288.54 KB
“Shenandoah Accumulated Wastewater data and WWTF .csv Tables w/ metadata”
96.42 KB
“Shenandoah Accumulated Wastewater data and WWTF geodatabase w/ metadata”
2.54 MB
“readme document about the changes in version 2.0”
1.79 KB

Material Request Instructions

Instructions for obtaining previous versions: The previous version (1.0) will be available upon request of the Virginia and West Virginia Water Science Center, Richmond Virginia office. 804-261-2600, Jennifer Rapp or Chintamani Kandel


Calculate accumulated wastewater and accumulated wastewater in percent (ACCWW %) and Predicted Environmental Concentrations (PECs) in the Shenandoah River watershed to visualize wastewater percentage and constituent concentrations in river segments. The result provides a screening-level view of river segments that receive treated or engineered water which may contain Endocrine Disrupting Chemicals that are not EPA regulated, but pass through the treatment process of permitted wastewater facilities.
Browse Graphic for display on Landing Page
Browse Graphic for display on Landing Page


Spatial Services

ScienceBase WMS


  • Chesapeake Bay Endocrine Disrupting Chemicals
  • USGS Data Release Products

Associated Items



Data source
Input directly
As part of the USGS data release process, these reviewed data and metadata were stored on ScienceBase.

Additional Information


Type Scheme Key
DOI doi:10.5066/F7RF5S8X

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