According to Middle Atlantic River Forecast Center estimates, no rain fell in the basin in the past 24 hours. However, streamflows have risen slightly due to Monday's rain, and forecasts call for over an inch and a half of rain throughout most of the basin over the next 7 days.
REVISION 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 precip: 0.00036 (inches)
Past 3-day cumulative area-weighted average basin precip: 0.3937 (inches)
Past 7-day cumulative area-weighted average basin precip: 0.43799 (inches)
Daily Flows:
Little Falls gage flow 2019-10-01: 1131 MGD (1750 cfs)
Little Falls gage flow 2019-10-02: 1144 MGD (est., based on recently available real time data) (1770 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2019-10-01: 1150 MGD (1780 cfs)
Point of Rocks flow 2019-10-02: 1383 MGD (est., based on recently available real time data) (2140 cfs)
Yesterday's Net Potomac withdrawal (2019-10-01):
FW Corbalis withdrawal (Potomac): 99 MGD
WSSC Potomac withdrawal: 128 MGD
Aqueduct withdrawal: 158 MGD
Loudoun withdrawal: 10 MGD
Total Potomac withdrawal: 394 MGD