Frederick County Stream Survey

A “watershed” is an area of land area that channels rainfall and snowmelt into creeks, streams, and rivers, and eventually to outflow points such as reservoirs, bays, and the ocean. The Frederick County Stream Survey monitors the condition of local watersheds, using inventories of plant and aquatic insect populations, water samples, and habitat assessments to determine ecological health and identify problem areas. 

Use our interactive map or the image below to locate which watershed you live in. Then, use the links farther down this page to view your watershed fact sheets as well as more in-depth reports outlining how the County collects, analyzes, and depicts the results of the Stream Survey program.  

Interactive Map of Stream Survey Sites

Map of Frederick County Watersheds Opens in new window

Fact Sheets on Local WatershedsBallengerFacts_Website Opens in new window

Stream Survey Program Reports

Stay tuned! In 2023, Frederick County will present the results of our third round of watershed monitoring, with data collected between 2018-2021.