Maryland Water Quality Monitoring Organizations

image of MDE staff collecting benthic macroinvertebrates 

There are a variety of water quality information sources in the State of Maryland.  Much of this information can be accessed via websites maintained by national, state, local governments, academic and non-government organizations. Listed below are just some of the organizations that collect water quality information in Maryland.   


Organization Web Link
Federal/Inter-State Government
Chesapeake Bay Program (CBP) CBP Home Page
Environmental Protection Agency (EPA) - STORET/WQX data EPA STORET/WQX web page
Interstate Commission on the Potomac River Basin (ICPRB) ICPRB Home Page
Susquehanna River Basin Commission (SRBC) SRBC Water Quality Data
United States Geological Survey (USGS) - Maryland-specific data USGS - Maryland Data
State of Maryland
Maryland Department of Natural Resources (DNR) - Eyes on the Bay Eyes on the Bay Page
Maryland Department of Natural Resources (DNR) DNR Home Page
Maryland iMap iMap Home Page
Maryland Water Monitoring Council (MWMC) MWMC Home Page
Maryland Environmental Resource and Land Information Network (MERLIN) MERLIN Mapping Site
Maryland's State Water Monitoring Strategy State Monitoring Strategy (approved by EPA)
University of Maryland - Appalachian Laboratory (Frostburg, MD) UMD - AL Frostburg
University of Maryland - Chesapeake Biological Laboratory(Solomons, MD) UMD - CBL Solomons

University of Maryland - Horn Point Laboratory (Cambridge, MD)

UMD - Horn Point Lab
County/City Governments
Bal​timore City Department of Public Works - Water Quality DPW Water Quality Page​
Baltimore County - Environmental Health Services (EHS) EHS Page
Baltim​ore County Department of Environmental Protection and Sustainability (DEPS) - Watershed Management and Monitoring DEPS Watershed Management Page
Montgomery County Department of Environmental Protection (DEP) DEP Home Page
Washington Suburban Sanitary Commission (WSSC) WSSC Home Page
Watershed Organizations
​Arundel Rivers Federation (ARF) ​ARF Home Page
Blue Water Baltimore (BWB) BWB Home Page
Chesapeake Bay Foundation (CBF) CBF Home Page
Corsica River Conservancy (CRC) CRC Home Page​​
Magothy River Association (MRA) MRA Home Page
Nanticoke Watershed Alliance (NWA) NWA Home Page
Severn Riverkeeper (SR) SR Home Page
​Shore Rivers (SHR) ​SHR Home Page​​
​Severn River Association (SRA) SRA Home Page​

For more information about this page, please contact Becky Monahan at​