Yesterday's storms resulted in accumulations of over a half inch of rain in certain localized areas of the basin near the Washington metropolitan area, causing flow at Little Falls to rise slightly. However, most upstream areas of the basin received little or no rain. There is a chance of thunderstorms this weekend, and the National Weather Service (NWS) quantitative precipitation forecasts (qpf) indicate that the majority of the basin may receive from 1/4 to 1 inch of rain over the next 48 hours.
Daily Flows:
Little Falls gage flow 07/29: 950 MGD (1470 cfs)
Little Falls gage flow 07/30: 1090 MGD (est., based on recently
available real time data) (1680 cfs)
Note: Gage flow at Little Falls is measured after water
supply withdrawals.
Point of Rocks flow 07/29: 940 MGD (1460 cfs)
Point of Rocks flow 07/30: 930 MGD (est., based on recently
available real time data) (1440 cfs)
Net Potomac Production (07/29/10):
FW Corbalis raw water withdrawal (Potomac): 110 MGD
WSSC Potomac Production: 144 MGD
Aqueduct withdrawal: 183 MGD
Total Potomac demand: 437 MGD