Monitoring Reports

River flows continue to fall. It looks like the western portion of the basin could receive some rain toward the end of the next 7-day period.

Daily Flows:
Little Falls gage flow 2017-10-01: 873 MGD (1350 cfs)
Little Falls gage flow 2017-10-02: 840 MGD (est., based on recently available real time data) (1300 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.

Point of Rocks flow 2017-10-01: 892 MGD (1380 cfs)
Point of Rocks flow 2017-10-02: 834 MGD (est., based on recently available real time data) (1290 cfs)

No change in weather conditions is expected over the next week. The US Army Corps of Engineers made the season's final whitewater release yesterday from Savage Reservoir: 1000 cfs from 10 AM to 4 PM. More information on North Branch Potomac releases can be found at http://www.nab-wc.usace.army.mil/northBranch.html.

The National Weather Service forecasts that dry conditions will continue in the basin over the next 7 days.

Daily Flows:
Little Falls gage flow 2017-09-29: 853 MGD (1320 cfs)
Little Falls gage flow 2017-09-30: 860 MGD (est., based on recently available real time data) (1330 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.

Point of Rocks flow 2017-09-29: 944 MGD (1460 cfs)
Point of Rocks flow 2017-09-30: 918 MGD (est., based on recently available real time data) (1420 cfs)

This email concludes CO-OP's 2015 Washington Metropolitan Area Drought Exercise. Experience gained during our annual drought exercises helps maintain our region's preparedness to reliably supply water even in the face of serious drought. We would like to thank everyone who participated in the exercise for your assistance, insights, patience, and hard work.

National Weather Service forecasts indicates that the basin will have no relief from the dry weather over the next week. Potomac River flow at Point of Rocks is now close to its 25th percentile level for this day of the year.

The daily flow and demand update was inadvertently not sent out yesterday. Yesterday's reported demand values appear at the end of today's report.

DROUGHT EXERCISE - Afternoon simulated Potomac flow and demand update (Monday 09/28/2017) - DROUGHT EXERCISE

Daily Flows (simulated):
Little Falls gage flow 09/27: 140 MGD (210 cfs)
Point of Rocks gage flow 09/27: 390 MGD (610 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Little Falls gage flow 09/28: 140 MGD (210 cfs)
Point of Rocks gage flow 09/28: 400 MGD (620 cfs)

DROUGHT EXERCISE - Afternoon simulated Potomac flow and demand update (Sunday 09/27/2017) - DROUGHT EXERCISE

Daily Flows (simulated):
Little Falls gage flow 09/26: 190 MGD (300 cfs)
Point of Rocks gage flow 09/26: 420 MGD (650 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Little Falls gage flow 09/27: 120 MGD (180 cfs)
Point of Rocks gage flow 09/27: 400 MGD (630 cfs)

Forecasts indicate that dry conditions will continue for at least the next 7 days.

Daily Flows:
Little Falls gage flow 2017-09-26: 969 MGD (1500 cfs)
Little Falls gage flow 2017-09-27: 982 MGD (est., based on recently available real time data) (1520 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.

Point of Rocks flow 2017-09-26: 1079 MGD (1670 cfs)
Point of Rocks flow 2017-09-27: 1034 MGD (est., based on recently available real time data) (1600 cfs)

DROUGHT EXERCISE - Afternoon simulated Potomac flow and demand update (Saturday 09/26/2017) - DROUGHT EXERCISE

Daily Flows (simulated):
Little Falls gage flow 09/25: 180 MGD (280 cfs)
Point of Rocks gage flow 09/25: 380 MGD (590 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Little Falls gage flow 09/26: 130 MGD (190 cfs)
Point of Rocks gage flow 09/26: 370 MGD (580 cfs)

Dry conditions are expected to continue over the next week.

Daily Flows:
Little Falls gage flow 2017-09-25: 1021 MGD (1580 cfs)
Little Falls gage flow 2017-09-26: 957 MGD (est., based on recently available real time data) (1480 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.

Point of Rocks flow 2017-09-25: 1028 MGD (1590 cfs)
Point of Rocks flow 2017-09-26: 1125 MGD (est., based on recently available real time data) (1740 cfs)