The National Weather Service (NWS) 24 hour observed precipitation shows that there was 0.00 to 0.50 inches of rain in the Potomac basin above Little Falls. The NWS 3-day forecast predicts no rain over the majority of this same area. The US Geological Survey shows that Point of Rocks flow fell below and then rose above 2,000 cfs, our trigger for daily monitoring. We will continue daily monitoring efforts until we see that flows have significantly improved for several days.
Daily Flows:
Little Falls gage flow 2017-10-24: 1247 MGD (1930 cfs)
Little Falls gage flow 2017-10-25: 1519 MGD (est., based on recently available real time data) (2350 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2017-10-24: 1202 MGD (1860 cfs)
Point of Rocks flow 2017-10-25: 1338 MGD (est., based on recently available real time data) (2070 cfs)
Net Potomac withdrawal (2017-10-24):
FW Corbalis withdrawal (Potomac): 79 MGD
WSSC Potomac withdrawal: 125 MGD
Aqueduct withdrawal: 135 MGD
Total Potomac withdrawal: 339 MGD