Most parts of the Potomac basin above Little Falls received 1/10 to ½ inch of rain yesterday. River flows are already responding. However, the forecast is for dry conditions over the next 7 days, so we expect this slight increase in flows to be short-lived.
Daily flows:
Little Falls gage flow 2022-10-31: 1196 MGD (1850 cfs)
Little Falls gage flow 2022-11-01: 1209 MGD (est., based on recently available real-time data) (1870 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2022-10-31: 1202 MGD (1860 cfs)
Point of Rocks flow 2022-11-01: 1306 MGD (est., based on recently available real-time data) (2020 cfs)
Yesterday's Washington metropolitan area Potomac River withdrawals and discharges (2022-10-31):
Fairfax Water Corbalis withdrawal (Potomac): 76 MGD
WSSC Water Potomac withdrawal: 92 MGD
Washington Aqueduct withdrawal: 137 MGD
Loudoun Water withdrawal: 9 MGD
Loudoun Water Broad Run discharge: 6 MGD
Total Potomac withdrawal: 315 MGD
Total net Potomac withdrawal: 308 MGD
Loudoun Water Potomac River (PR) flow values for drought operations protocol (based on yesterday's flows):
QPR: 1860 cfs
QPR, obs: 1860 cfs
QPR, WS: 0 cfs
Interstate Commission on the Potomac River Basin