Situational Awareness (Thursday, 2025-10-16)
Dry conditions persist. No rain is forecast for the Potomac watershed over the next three days according to the Middle Atlantic River Forecast Center.
Special Conditions
None
Daily flows:
Little Falls gage flow 2025-10-15: 1079 MGD (1670 cfs)
Little Falls gage flow 2025-10-16: 982 MGD (est., based on recently available real-time data) (1520 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2025-10-15: 1125 MGD (1740 cfs)
Point of Rocks flow 2025-10-16: 1163 MGD (est., based on recently available real-time data) (1800 cfs)
Yesterday's estimated daily flows:
Great Falls estimated flow 2025-10-15: 1079 MGD (1669 cfs)
Note: Estimated flow below Great Falls intake is flow at Little Falls plus Little Falls water supply withdrawal.
Yesterday's Washington metropolitan area Potomac River withdrawals and discharges (2025-10-15):
Fairfax Water Corbalis withdrawal - Potomac: 108 MGD
WSSC Water Potomac withdrawal: 123 MGD
Washington Aqueduct withdrawal - Great Falls: 135 MGD
Washington Aqueduct withdrawal - Little Falls: 0 MGD
Loudoun Water withdrawal: 11 MGD
Loudoun Water Broad Run discharge: 6 MGD
Total Potomac withdrawal: 376 MGD
Total net Potomac withdrawal: 371 MGD
Loudoun Water Potomac River (PR) flow values for drought operations protocol (based on yesterday's flows):
QPR: 1740 cfs
QPR, obs: 1740 cfs
QPR, WS: 0 cfs
Interstate Commission on the Potomac River Basin