Learn about water quality testing with the scientists of Blue Water Baltimore! An Outfall Screening Blitz consists of taking teams of volunteers into our local streams to sample water quality. The events take place 48 hours after a major rain event to ensure stormwater is not being sampled. Samples will be collected from streams being...

The rocks, roots, and riffles of our local Baltimore rivers are rife with benthic macroinvertebrate life, better known as water bugs! These tiny creatures are a big indicator of waterway health.⁠ Join Blue Water Baltimore staff to explore a local stream, search for and identify benthic macroinvertebrates, and learn about types of pollution that can...