Nature Forward stream monitoring volunteers will be finding, identifying and counting macroinvertebrates that live in Upper Rock Creek. You are invited to drop by to peek at these amazing critters under a microscope, try identifying them, and learn what they are telling us about the health of the stream. We’ll meet in the Agricultural History Farm Park, 18400 Muncaster Rd, Derwood, MD 20855.

*Please park in the lots near the buildings and walk 1/2 mile back toward the entrance. (Please do not park in the grass along the road.)

More details here.