River flows at Little Falls continue to respond to local rainfall. According to the Middle Atlantic River Forecast Center predictions, average basin rainfall for the next 3 days is expected to be over 0.5 inches.
Recent basin-wide average precipitation (above Little Falls):
(based on CO-OP's Low Flow Forecast System analysis of Middle Atlantic River Forecast Center (MARFC) gridded multisensor precipitation estimates)
Yesterday's area-weighted average basin precipitation: 0.6 (inches)
Past 3-day cumulative area-weighted average basin precipitation: 1.19 (inches)
Past 7-day cumulative area-weighted average basin precipitation: 1.21 (inches)
Daily flows:
Little Falls gage flow 2023-09-09: 1125 MGD (1740 cfs)
Little Falls gage flow 2023-09-10: 1532 MGD (est., based on recently available real-time data) (2370 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2023-09-09: 808 MGD (1250 cfs)
Point of Rocks flow 2023-09-10: 795 MGD (est., based on recently available real-time data) (1230 cfs)
Yesterday's estimated daily flows:
Great Falls estimated flow 2023-09-09: 1188 MGD (1838 cfs)
Note: Estimated as gage flow at Little Falls plus Little Falls water supply withdrawal.
Recommended operations for today (2023-09-10 P.M.):
Fairfax Water:
Per operational preference.
WSSC:
Per operational preference.
Aqueduct:
Per operational preference.