There was a significant storm over the northeast portion of the basin this morning with up to 2 inches of rain seen in some locations. The National Weather Service 48-hour forecast predicts 0.25 inches in the western areas of the basin and up to 1 inch in the eastern portion. The 5-day quantitative precipitation forecast indicates a chance of over 2 inches of accumulated rainfall over much of the basin. Many of the USGS gages are not currently reporting flow for yesterday and have not been updated with real-time information since around 1:00 am this morning. The most recently available flow data are reported here.
Daily Flows:
Little Falls gage flow 08/11: 770 MGD (1190 cfs)
Little Falls gage flow 08/12: 770 MGD (est., based on recently
available real time data) (1190 cfs)
Note: Gage flow at Little Falls is measured after water
supply withdrawals.
Point of Rocks flow 08/11: 980 MGD (1520 cfs)
Point of Rocks flow 08/12: 980 MGD (est., based on recently
available real time data) (1520 cfs)
Net Potomac Production (08/11/10):
FW Corbalis raw water withdrawal (Potomac): 132 MGD
WSSC Potomac Production: 173 MGD
Aqueduct withdrawal: 183 MGD
Total Potomac demand: 488 MGD