This is a reference dataset for the Virginia Water Quality Standards for all free-flowing, freshwater streams, rivers and flowpaths designated as stockable or natural trout waters within the Virginia state boundary. See section 9VAC-25-260 of the Virginia Administrative Code for specific standards descriptions.

This report analyzed all DEQ stations with Total Phosphorus (TP) and Total Nitrogen (TN) samples taken from 2010 to 2020. Median values and number of samples the statistic was based on (n) are presented in the table below. 

The Virginia Water Protection Program (VWP) regulates activities in all surface waters which includes wetlands, streams, and open water. A permit (general permit coverage or individual permit) may be required in accordance with program regulations and State Water Control Law. This layer represents the project location of both active and historic VWP General Permit Coverage (GP) issued across the state. The General Permit Tracking number, name, and regional office are among several attributes in this layer. The attribute data is pulled from DEQ's Comprehensive Environmental Data System (CEDS). The GIS data layers and maps produced by the Virginia Department of Environmental Quality (DEQ) are provided as a public resource. The Virginia Department of Environmental Quality has attempted to ensure the accuracy and completeness of the data. DEQ makes or extends no warranties of any type, expressed or implied, including but not limited to: appropriateness of use, accuracy, or completeness of data.
DEQ does not guarantee the GIS data provided is complete or current because the information contained in these data may change over time. These data and related maps are not legal documents and should not be construed or used as such. It is encouraged that these data are obtained from a DEQ resource and not through other sources which may lead to changed or outdated data. While using DEQ GIS data, the use and modification of such data is done at the risk of the user, and where DEQ holds no liability of any nature resulting from the use or correctness of this data.
Pursuant to Section 54.1-402, paragraph C of the Code of Virginia, this data may not be used for purposes listed in said paragraph C, since the data was not created, nor is it maintained under the supervision of a licensed land surveyor.

The Resource Conservation and Recovery Act Information System (RCRAInfo) is EPA’s comprehensive information system in support of the Resource Conservation and Recovery Act (RCRA) of 1976 and the Hazardous and Solid Waste Amendments (HSWA) of 1984. It tracks many types of information about generators, transporters, treaters, storers, and disposers of hazardous waste.

Polygon layer representing all watershed Boundaries for the Implementation Watersheds, including Approved, In Progress and Completed Implementation Areas.

Polygon feature class outlining the major river basin watershed areas within Virginia.

This is a reference dataset for the Virginia Water Quality Standards for the tidal waters, represented as polygons, within the Virginia state boundary. See section 9VAC-25-260 of the Virginia Administrative Code for specific standards descriptions.