Situational Awareness (Thursday, 2025-09-11)
In the past 24 hours, 0–0.25 inches of rain fell in the lower basin near Washington, DC. Forecasts indicate less than 0.1 inches of precipitation, limited to the metro area, over the next day, and approximately 0 inches expected across the basin for the week.
Special Conditions
None
Situational Awareness (Wednesday, 2025-09-10)
No appreciable rainfall fell in the basin yesterday, according to the Middle Atlantic River Forecast Center. Over the next three days no rainfall is anticipated in the western portions of the basin. At the same time, eastern portions of the basin are expected to see less than 0.1 inches of total precipitation.
Special Conditions
None
Situational Awareness (Tuesday, 2025-09-09)
According to the Middle Atlantic River Forecast Center predictions, no precipitation was observed in the basin over the past 24 hours. Over the next 24 to 48 hours, eastern portions of the basin may experience less than 0.1 inches of total rainfall.
Special Conditions
None
Situational Awareness (Monday, 2025-09-08):
Potomac River flow has shown a slight decrease since yesterday. The Middle Atlantic River Forecast Center predicts no appreciable precipitation in the Potomac watershed above Little Falls over the next 7 days, with total accumulation expected to be 0.10 inch or less.
Special Conditions:
None.
Situational Awareness (Sunday, 2025-09-07)
Potomac River flows are holding steady due to recent light rainfall. Though more rain is expected in the DC metro region today, the Middle Atlantic River Forecast Center predicts no appreciable precipitation in the Potomac watershed above Little Falls over the next 3 days.
Special Conditions
None
Daily flows:
Situational Awareness (Saturday, 2025-09-06)
Potomac River flows continue to decline. According to the Middle Atlantic River Forecast Center predictions, average rainfall in the Potomac watershed yesterday was negligible and approximately 1/4 inch is expected over the next 24 hours.
Special Conditions
Situational Awareness (Friday, 2025-09-05)
Potomac River flow is holding steady. According to the Middle Atlantic River Forecast Center, there was light rainfall in most areas of the watershed yesterday, and accumulations of 0.10 to 0.50 inches are expected in most areas during the next 3 days.
Special Conditions
None
Daily flows:
Little Falls gage flow 2025-09-04: 1008 MGD (1560 cfs)
Situational Awareness (Thursday, 2025-09-04)
River flows continue to slowly decline. According to the Middle Atlantic River Forecast Center, no appreciable rain fell in the watershed over the past 3 days. But forecasts indicate that the watershed will receive approximately 1/2 inch of rain over the next 3 days.
Special Conditions
None
Daily flows:
Situational Awareness (Wednesday, 2025-09-03)
Dry conditions persist. According to Middle Atlantic River Forecast Center predictions, average basin rainfall may be around 0.2 inches over the next 3 days.
Special Conditions
None
Recent basin-wide average precipitation (above Little Falls):
Situational Awareness (Tuesday, 2025-09-02):
CO-OP is initiating daily drought monitoring and reporting today because Potomac River flow at the US Geological Survey’s gage at Point of Rocks, Maryland, has fallen below 2,000 cubic feet per second (cfs), CO-OP's daily monitoring threshold.