Negligible amounts of precipitation have been observed in the Potomac basin over the past couple of days. The National Weather Service (NWS) forecasts show no predicted precipitation over the next 48-hour period. As Hurricane Earl moves up the East Coast, the NWS indicates that the 5-day accumulated precipitation could range from 0.1 and 0.5 inches over most of the basin. The artificially varied flow release is currently passing the Potomac River gage at Hancock, MD.
Daily Flows:
Little Falls gage flow 08/31: 820 MGD (1270 cfs)
Little Falls gage flow 09/01: 770 MGD (est., based on recently
available real time data) (1190 cfs)
Note: Gage flow at Little Falls is measured after water
supply withdrawals.
Point of Rocks flow 08/31: 900 MGD (1400 cfs)
Point of Rocks flow 09/01: 890 MGD (est., based on recently
available real time data) (1380 cfs)
Net Potomac Production (08/31/10):
FW Corbalis raw water withdrawal (Potomac): 130 MGD
WSSC Potomac Production: 150 MGD
Aqueduct withdrawal: 176 MGD
Total Potomac demand: 456 MGD