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 (Thursday 07/08/2010)

Submitted by admin1 on Thu, 07/08/2010 - 09:00

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Flow at Point of Rocks is currently 2,070 cfs (1,340 MGD). The increase in Point of Rocks flow is likely due to the 6 hour whitewater release from Savage of 1,000 cfs, which should be recorded sometime today. The basin has received no rain for the month of July, which is 0.7 inches below normal. The National Weather Service (NWS) quantitative precipitation forecasts (qpf) indicate a chance of 0.75 to 1.9 inches of accumulated rain across the basin over the next 5 days.

Daily Potomac flow and demand update (Wednesday 07/07/2010)

Submitted by admin1 on Wed, 07/07/2010 - 09:00

Read more about Daily Potomac flow and demand update (Wednesday 07/07/2010)

Flow at Point of Rocks is currently 1,910 cfs (1,234 MGD). The basin received no rain yesterday. The National Weather Service (NWS) quantitative precipitation forecasts (qpf) indicate a chance of 0.75 to 1.5 inches of accumulated rain across the basin over the next 5 days. On July 4, there was a 6 hour whitewater release from Savage of 1,000 cfs. The release passed the Hancock gage yesterday.

Discontinuing Daily Monitoring - Potomac flow and demand update, (Wednesday 10/21/09)

Submitted by admin1 on Wed, 10/21/2009 - 09:00

Read more about Discontinuing Daily Monitoring - Potomac flow and demand update, (Wednesday 10/21/09)

Flow at Point of Rocks is currently 2,710 cfs. The Potomac basin is forecasted to receive 0.75 to 1.00 inch of rain over the next five days. The Corps continues its release from Savage Reservoir of approximately 100 cfs.

Flow at Point of Rocks has remained above the low flow monitoring threshold for several days running. Therefore, daily monitoring will be discontinued until further notice. Thank you to all for your contribution to the monitoring efforts. If flow at Point of Rocks drops below 2,000 cfs, daily monitoring will be resumed.