DROUGHT EXERCISE - Afternoon simulated Potomac flow and demand update (Thursday 09/27/2012)
Drought exercise simulation day: August 22, 2022. Today's target flow at the Luke USGS gage remains at 375 cfs.
SIMULATED Daily Flows:
Little Falls gage flow 08/21: 140 MGD (220 cfs)
Little Falls gage flow 08/22: 140 MGD (est., based on most recently available real time data) (214 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 08/21: 540 MGD (830 cfs)
Point of Rocks flow 08/22: 530 MGD (est., based on recently available real time data) (830 cfs)
Today's estimated demand (08/22/22) P.M.:
WSSC P.M. estimated demand: 170 MGD
FW P.M. estimated demand: 175 MGD
Aqueduct P.M. estimated demand: 155 MGD
SIMULATED LW total estimated demand: 35 MGD
SIMULATED LW WTP estimated demand: 15 MGD
Tomorrow's estimated demand (08/23/22):
WSSC estimated demand: 165 MGD
FW estimated demand: 165 MGD
Aqueduct estimated demand: 142 MGD
SIMULATED LW total estimated demand: 35 MGD
SIMULATED LW WTP estimated demand: 15 MGD
SIMULATED - Recommended operations for today (08/22/22):
Fairfax Water:
Maintain Occoquan total withdrawal of 110 MGD. Keep the Potomac withdrawal as steady as possible.
WSSC:
Maintain Patuxent withdrawal of 60 MGD. Keep the Potomac withdrawal as steady as possible.
Seneca (release date, time, amount in MGD):
No release from Little Seneca Reservoir is scheduled today.
Aqueduct:
At 5:00pm close Great Falls gates. Then at 8:00pm increase Little Falls withdrawal from 125 MGD to the rate necessary to meet total demand.
Loudoun Water:
Withdraw 10 MGD from the Potomac. Withdraw 5 MGD from quarry storage.
North Branch Reservoirs:
Today's Luke target is 375 cfs.