31, August 3, 2018) that create exceptions to the prohibition of swimming in the District’s portion of the Potomac River and Anacostia River by authorizing qualifying swimming events for limited amounts of time under limited conditions.Į. 32, August 10, 2012) and 2018 (Anacostia River Special Swimming Events, DCR Vol. However, rules were adopted in 2012 (Action to Amend the Ban on Swimming in the Potomac River, DCR Vol. Swimming is prohibited in District of Columbia rivers and streams. View water quality reports and information regarding all District of Columbia water bodies. The depth of water quality sensing devices located on the Potomac and Anacostia Rivers can change as a result of the tidal influence on the water bodies or an increase in flow due to precipitation. Too much algae robs the water of adequate dissolved oxygen for other aquatic organisms survival. Chlorophyll is the main chemical responsible for photosynthesis in plants, the process by which sunlight is converted into food energy. When materials such as clay, silt, organic matter, or microscopic organisms enter a waterbody, turbidity values increase and cause water to become cloudy and aesthetically unappealing.Ĭhlorophyll is a measure of the amount of algae (plants) in water. Clear water will have a turbidity measurement of 0 NTU. Acids have a pH value of less than seven, while bases have a pH value higher than 7. The pH range most suitable for aquatic organisms is between 6 to 8.5. PH is the measure of acidity or basicity of water. Water temperatures should not exceed 89° F. Chronically stressful conditions may cause the aquatic organisms to relocate to an area with more suitable water temperatures.
If water temperatures fluctuate constantly aquatic organisms such as fish and shellfish will become stressed. Water temperature is the measure of how warm or cold water feels. Warmer water cannot hold as much oxygen as colder water. In DC, the DO levels should range from 4.0 to 6.0 mg/L or greater, depending on the time of year. DO is a very important measure of water quality as low DO levels can stress organisms. Helpful Definitions for Real-Time Water Quality Monitoring:ĭO is the amount of oxygen that is found in water and available to be used by aquatic organisms such as fish and shellfish. To obtain data for long periods of time, please contact Jeffrey Zahn at. To find data from a specific time period, scroll to the Data History section and enter the desired date range. Click the “Site Details” link at the bottom of the box to search for previous water quality measurements. New measurements are taken every 15 minutes.
Follow the link and then click on the water drops on the map to find the station name and the most recent water quality readings for that site.
Measurements include temperature, Dissolved Oxygen (DO), pH, depth, chlorophyll, and turbidity.Ĭlick the map above to view real-time information. The Anacostia River and Potomac River Monitoring Program provides information regarding the current water conditions of the Anacostia River and Potomac River in the locations displayed on the map below.
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