Significant rain fell in the southeastern portion of the Potomac River basin yesterday, with the heaviest accumulations occurring near the DC metropolitan area. More rain is expected today, and the Middle Atlantic River Forecast Center predicts between 1/4 to 3/4 of an inch in the southern basin, including the DC area and parts of the Shenandoah. Though the recent rainfall has caused Potomac River flow at Little Falls to increase significantly, flows remain low in many upstream tributaries.
Daily Flows:
Little Falls gage flow 08/17: 1140 MGD (1770 cfs)
Little Falls gage flow 08/18: 5380 MGD (est., based on recently
available real time data) (8320 cfs)
Note: Gage flow at Little Falls is measured after water
supply withdrawals.
Point of Rocks flow 08/17: 1010 MGD (1570 cfs)
Point of Rocks flow 08/18: 1070 MGD (est., based on recently
available real time data) (1660 cfs)
Net Potomac Production (08/17/10):
FW Corbalis raw water withdrawal (Potomac): 96 MGD
WSSC Potomac Production: 136 MGD
Aqueduct withdrawal: 184 MGD
Total Potomac demand: 416 MGD