As of this morning, ICPRB has started Drought Monitoring due to low flows in the Potomac River and no rain expected in the next week. The Potomac River supplies drinking water to 78% of people in the greater Washington metro region and 100% of residents in the District of Columbia and Arlington County, Virginia.

It has been about a month since Tropical Storm Debby blew through and increased the rivers flow enough to give us respite from the daily drought emails, but the river’s flow is now below the 2,000 cubic feet per second (cfs) threshold for drought monitoring.

During Drought Monitoring, staff at ICPRB’s Section for Cooperative Water Supply Operations on the Potomac (CO-OP) prepare a daily email for water suppliers and government agencies with flow, weather, and demand conditions. This important information can be used to inform water supply operations.

During periods of drought, the CO-OP helps manage the Washington metropolitan area water supply system by coordinating withdrawals from the Potomac River and off-river reservoirs and recommending releases from upstream reservoirs when forecasted flow in the river is not sufficient to meet expected needs.

Follow the conversation and see the daily emails using #droughtmonitoring on Facebook and Twitter/X.

The Washington metropolitan area remains in a Drought Watch declared by the Metropolitan Washington Council of Governments on July 29. Authorities are asking folks to use water wisely.

USGS gage Potomac River at Point of Rocks with a flow of 1820 cubic feet per second.