The National Weather Service (NWS) 24 hour observed precipitation shows that there was 0.01 to 1.25 inches of rain in the Potomac basin above Little Falls. The NWS 3-day forecast predicts accumulations of 0.25 to 1.50 inches of rain over this same area. The US Geological Survey shows that Point of Rocks flow 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 2017-10-23: 1099 MGD (1700 cfs)
Little Falls gage flow 2017-10-24: 1086 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 2017-10-23: 1053 MGD (1630 cfs)
Point of Rocks flow 2017-10-24: 1370 MGD (est., based on recently available real time data) (2120 cfs)
Net Potomac withdrawal (2017-10-23):
FW Corbalis withdrawal (Potomac): 94 MGD
WSSC Potomac withdrawal: 150 MGD
Aqueduct withdrawal: 136 MGD
Total Potomac withdrawal: 380 MGD