The rain falling across the basin today is helping to maintain flow
levels and, along with a drop in demands, is keeping utility
operations steady. The releases from the North Branch reservoirs
continue. The leading edge of the release can be seen at the Paw Paw,
WV gage on the mainstem Potomac River.
Washington Aqueduct will go off of the Little Falls pumping station
and back to Great Falls when possible. They were unable to reach the
station earlier in the day due to the triathlon taking place in the
area.
Daily Flows:
Little Falls gage flow 09/11: 340 MGD (520 cfs)
Little Falls gage flow 09/12: 410 MGD (est., based on most recently
available real time data) (639 cfs)
Note: Gage flow at Little Falls is measured after water
supply withdrawals.
Point of Rocks flow 09/11: 640 MGD (990 cfs)
Point of Rocks flow 09/12: 700 MGD (est., based on recently
available real time data) (1090 cfs)
Net Potomac Production (09/11/10):
FW Corbalis raw water withdrawal (Potomac): 119 MGD
WSSC Potomac Production: 147 MGD
Aqueduct withdrawal: 166 MGD
Total Potomac demand: 432 MGD
Patuxent, Occoquan, and Net Total System Production (09/11/10):
WSSC Patuxent withdrawal: 53 MGD
FW Occoquan raw water withdrawal: 89 MGD
Total System demand: 574 MGD
Today's estimated demand (09/12/10) P.M.:
WSSC P.M. estimated demand: 185 MGD
FW P.M. estimated demand: 180 MGD
Aqueduct P.M. estimated demand: 160 MGD
Total P.M. estimated demand: 525 MGD
Tomorrow's estimated demand (09/13/10):
WSSC estimated demand: 185 MGD
FW estimated demand: 195 MGD
Aqueduct estimated demand: 170 MGD
Total estimated demand: 550 MGD
Recommended operations for today (09/12/10):
Fairfax Water:
Maintain withdrawal at Occoquan Reservoir; today's Occoquan target: 90 MGD
WSSC:
Keep Potomac withdrawals as steady as possible.
Seneca (release date, time, amount in MGD):
No release from Little Seneca Reservoir is scheduled today.
Aqueduct:
Per operational preference; may discontinue Little Falls withdrawal for today.
North Branch Reservoirs:
Maintain Luke target of 435 cfs.