Through regional cooperation and partnerships, ICPRB is protecting the river and improving the quality of life in the watershed, as it has since 1940.
Did you know the basin covers over 14,000 square miles across four states and the District of Columbia? Or that the largest recorded flow was 275 billion gallons in one day?
Download ICPRB publications, browse maps of the basin, and get caught up on current events affecting the Potomac. Become a subscriber to our free newsletter.
ICPRB’s CO-OP Section is the leader for cooperative water supply management for metro Washington, D.C., region.
Road salts threaten water quality by increasing sodium concentrations to levels that harm aquatic life and affect drinking water quality.
Cooperative planning and management through CO-OP, Potomac DWSP Partnership, and other water resource initiatives. Learn More
Evaluate and report on water quality conditions in the Potomac River basin. Learn More
Evaluate and report on biological communities and their responses to stream & river conditions. Learn More
Educate and engage basin residents and organizations on critical issues in the watershed. Learn More
ICPRB is a partner in Chesapeake Bay restoration as the health of the Potomac is integral to the health of the Bay. Learn More
ICPRB provides maps, reports, and newsletters to support the public's understanding of the Potomac River and watershed.