Our two stream health programs focus on what lives at the bottom of streams (benthic macroinvertebrates) as indicators of water quality.

Our flagship Water Quality Monitoring program trains volunteers (adults & families) to monitor 25-30 stream sites in 10 watersheds in Maryland & DC. Learn More & Become a monitor!

Use our excellent Creek Critters smartphone app to wade in and learn what lives in your stream – no training needed. Join or host a fun Creek Critters event with your community!

Are you a teacher interested in providing your students with a meaningful watershed educational experience? We offer stream science programs for schools.

Find out where our programs monitor and about the health of our local streams.