Situational Awareness (Saturday, 2026-01-24)
No precipitation fell in the Potomac basin yesterday. A cumulative average of 1 to 1 1/2 inches is expected in the portion of the watershed above Little Falls over the next 3 days according to information from the Mid-Atlantic River Forecast Center.
Special Conditions
None
Daily flows:
Little Falls gage flow 2026-01-23: 1364 MGD (2110 cfs)
Little Falls gage flow 2026-01-24: 937 MGD (est., based on recently available real-time data) (1450 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2026-01-23: 1118 MGD (1730 cfs)
Point of Rocks flow 2026-01-24: 1222 MGD (est., based on recently available real-time data) (1890 cfs)
Yesterday's estimated daily flows:
Great Falls estimated flow 2026-01-23: 1364 MGD (2110 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 (2026-01-23):
Fairfax Water Corbalis withdrawal - Potomac: 84 MGD
WSSC Water Potomac withdrawal: 138 MGD
Washington Aqueduct withdrawal - Great Falls: 115 MGD
Washington Aqueduct withdrawal - Little Falls: 0 MGD
Loudoun Water withdrawal: 8 MGD
Loudoun Water Broad Run discharge: 9 MGD
Total Potomac withdrawal: 344 MGD
Total net Potomac withdrawal: 336 MGD
Loudoun Water Potomac River (PR) flow values for drought operations protocol (based on yesterday's flows):
QPR: 1730 cfs
QPR, obs: 1730 cfs
QPR, WS: 0 cfs
Interstate Commission on the Potomac River Basin