Flow at Point of Rocks dropped below the daily monitoring threshold of 2,000 cfs last Friday. While demand is low right now and there is potential for significant rain in the forecast, daily monitoring has been initiated given that flows continued to drop over the weekend. The Point of Rocks flow is currently below the 25 percentile. The various precipitation forecasts show different accumulated rainfall estimates, but most predict between 1.75 and 2.5 inches of rain across the basin over the next 48 hours. ICPRB CO-OP staff will make a determination about the need to continue daily monitoring based on the actual rainfall received.
Daily Flows:
Little Falls gage flow 09/16: 1220 MGD (1880 cfs)
Little Falls gage flow 09/17: 1140 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 09/16: 1050 MGD (1630 cfs)
Point of Rocks flow 09/17: 980 MGD (est., based on recently available real time data) (1520 cfs)
Net Potomac Production (09/16/12):
FW Corbalis raw water withdrawal (Potomac): 108 MGD
WSSC Potomac Production: 111 MGD
Aqueduct withdrawal: 133 MGD
Total Potomac demand: 352 MGD