Online Sources of Water Monitoring Data

The VWMC provides links to online sources of water data at the regional, statewide, and national levels. These data can be used to help assess the conditions of Virginia’s waters. Report broken links to

* Disclaimer: The material on this website is provided for information purposes only. The Virginia Water Monitoring Council, the Virginia Water Resources Research Center, and other VWMC members cannot guarantee the accuracy or timeliness of information facilitated through hyperlinks to this website. The mention of commercial products, trade names, manufacturers, or services does not constitute an endorsement or recommendation by the VWMC or its members.

Chesapeake Data Explorer –

Friends of the Shenandoah River

James River Watch 

National Oceanic and Atmospheric Administration (NOAA)

National Weather Service –

Climate –

GIS Portal (includes Climate Atlas) –

Water –

Monitoring and Data Index (precipitation, drought, soil moisture, snow cover, etc.) –

National Water Quality Monitoring Council — Water Quality Portal —

U.S. Drought Monitor

U.S. Environmental Protection Agency (EPA) – Water Quality Data (WQX) –

U.S. Geological Survey (USGS)

Virginia Water Science Center – Data Center (streamflow, ground water, water quality, precipitation) –

Water Data for the Nation (surface water, ground water, water quality) –

Virginia Department of Environmental Quality (DEQ)

Drought Monitoring and Response in Virginia – Current Drought Conditions Map

Environmental Data Mapper –

Fish Tissue and Sediment Data (includes: fish tissue data, sediment data, Shenandoah mercury study, and Kepone fish data) Fish Tissue Monitoring

Probabilistic Monitoring – Data 

Virginia Environmental Data Hub –

Water Quality, Watershed, Assessment, and Water Permitting Datasets –

Virginia Department of Health (VDH)

Beach Monitoring Data –

Virginia Institute of Marine Science (VIMS)

Submerged Aquatic Vegetation (SAV) in Chesapeake Bay and Delmarva Peninsula Coastal Bays –

Virginia Estuarine and Coastal Observing System (water quality) –