Resources

Interstate Commission on the Potomac River Basin

Maps

Maps are essential for understanding changing conditions in the basin. A selection of basic maps are available here.

Map of the Potomac River Basin
Water Supply System
Water Quality Data Inventory
Wandering the Watershed Story Map

Publications

Access ICPRB and collaborative reports and publications.

Washington Metropolitan Area Water Supply Alternatives
Sign up to Receive News and Updates
News and Library Resources

CO-OP

Cooperative planning and management ensures the water quantity and quality needed for many human uses, including drinking water. CO-OP provides this essential service for the Washington, D.C., region.

History and Agreements
Water Supply Reliability Studies
Drought Monitoring and Operations

Educator Resources

ICPRB staff facilitate workshops and activities to support educators in the Potomac basin. Learn more about current offerings.

Score Four: Students, Schools, Streams, and the Bay
Water Ways: Stream Ecology and Monitoring
Watershed Connections Land Use Models
Environmental Resource Directory

Get Involved

Find ways to get involved in your own community and get outside!

Calendar of Events
Watershed Activities to Encourage Restoration
Recreation in the Basin