Monitoring Reports

During periods of drought, the Cooperative Water Supply Operations on the Potomac (CO-OP) helps manage the Washington metropolitan area water supply system by coordinating withdrawals from the Potomac River and off-river reservoirs and recommending releases from upstream reservoirs when forecasted flow in the river is not sufficient to meet expected needs. These needs include water demands and an environmental flow-by of 100 million gallons per day (MGD) on the Potomac River at Little Falls dam near Washington, D.C.

Daily Potomac flow and demand update (Wednesday, 2023-11-01)

Submitted by snummer on Wed, 11/01/2023 - 12:51

Situational Awareness (Wednesday, 2023-11-01)
About 0.2 inches of rain fell in the Potomac basin over the past several days. According to the Middle Atlantic River Forecast Center predictions, no appreciable rainfall is expected over the next 3 days. The week-long outlook expects a total of approximately 0.5 inches of rain in the basin. 

Daily Potomac flow and demand update (Sunday, 2023-10-29)

Submitted by admin1 on Sun, 10/29/2023 - 08:17

Situational Awareness (Sunday, 2023-10-29)
According to the Middle Atlantic River Forecast Center predictions, the next 24 hours may see 0.1 inches of rain. Over the next week, the average basin rainfall may be around 0.2 inches.  

The temporary decrease in flows from yesterday's adjusted operations at Dam No 4 is now visible at the Point of Rocks gage.  

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