Monitoring Reports

Situational Awareness (Thursday, 2025-09-25)

Potomac River flows are expected to rise slightly over the next several days according to Middle Atlantic River Forecast Center (MARFC) predictions. MARFC estimates that total rainfall over the past three days has ranged from 0.25 to 1 inches in most portions of the Potomac watershed above Little Falls. Cumulative precipitation forecasts call for 0.50 to 0.75 inches of rain over the next three days.

Special Conditions

None

Situational Awareness (Tuesday, 2025-09-23)
According to the Middle Atlantic River Forecast Center, trace amounts of rainfall feel in western portions of the upper basin over the past 24 hours. The next 72 hours may see between 0.5 and 2 inches of rain. While the week-long outlook expects a total rainfall between 0.75 and 2 inches in the basin.

Special Conditions
None

Situational Awareness (Saturday, 2025-09-20):
According to the Middle Atlantic River Forecast Center predictions, the next 3 days may see trace amounts of rain around the edges of the basin. The week-long outlook expects a total of around 0.5–1.5 inches, which is modest compared to the heavy rainfall bands in the central U.S.

Special Conditions:
None

Situational Awareness (Friday, 2025-09-19)
No precipitation fell in the past 24 hours. Flows at Point of Rocks remain above the 2,000 cfs daily monitoring threshold but are expected to decline in the coming days. Forecasts from the Middle Atlantic River Forecast Center call for light rainfall of 0.01 to 0.1 inch over the next three days, with basin-wide totals of 0.01 to 0.5 inch expected over the week ahead.

Special Conditions
None

Situational Awareness (Wednesday, 2025-09-17):
Yesterday, 0 to 1.5 inches of precipitation fell across the region, leading to some increases in stream flows today. The Middle Atlantic River Forecast Center projects an additional 0.1 to 0.75 inches of precipitation over the next 24 to 72 hours.

Situational Awareness (Tuesday, 2025-09-16)
Minimal precipitation fell in the past 24 hours, and flows continue to decline. The Middle Atlantic River Forecast Center projects little additional rainfall over the next 24 hours. In the 3- to 7-day outlook, basin totals are expected to range from 0.1 to 0.75 inches, with heavier amounts in the lower Potomac and lower overall averages across the basin.

Special Conditions
None

Situational Awareness (Monday, 2025-09-15)
Potomac Rive flow continues to gradually decline. According to the Middle Atlantic River Forecast Center predictions, no rainfall is expected in the next 24 hours. Over the next 3 days, average basin rainfall may be between 0.1 and 0.75 inches, with more rainfall expected in downstream portions of the basin. 

Special Conditions
None

Situational Awareness (Saturday, 2025-09-13)
According to the Middle Atlantic River Forecast Center, no rain fell in the basin over the past 24 hours. Additionally, no rain is expected to fall in the basin over the next 3 days. The week-long outlook expects a total of approximately 0.1 inches of rain in the basin.

Special Conditions
None

Situational Awareness (Friday, 2025-09-12)
According to the Middle Atlantic River Forecast Center predictions, no rain is expected in the basin over the next three days.  Trace amounts of rain are possible over the next seven days.  

Special Conditions
None

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