Historical Water Quality
Met water quality standards less than 60% of the time
This status is based on the latest sample, taken on September 24th, 2025 Potomac Riverkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on September 25th, 2025 at 11:50.
Joseph's Branch is sampled Weekly from May 1st to September 30th.
About Joseph's Branch
Current Weather
Source Information
Funded by the District Department of Energy and Environment (DOEE) (Grant# RFA 2018-1805-WQD-VWQM), Anacostia Riverkeepers run a citizen science water quality monitoring program in partnership with Alliance for the Chesapeake Bay, Audubon Naturalist Society, and Rock Creek Conservancy. Testing occurs weekly at 8 sites (from May through September) along the Rock Creek for bacteria, water temperature, air temperature, pH, and turbidity. The goal of this volunteer monitoring program is to provide valuable and accessible water quality data for residents and visitors, so they can make informed decisions before recreating.
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