Monitoring Reports

Situational Awareness (Tuesday, 2025-10-14)
Potomac River flows are holding relatively steady. According to information provided by the Middle Atlantic River Forecast Center, the Potomac watershed received a small amount of rainfall over the past 24 hours - 1/100 to 1/10 of an inch in most areas in the northern portion of the watershed and little or no rain in the southern portion. No rain is forecast for the watershed over the next 3 days.

Situational Awareness (Monday, 2025-10-13)
The impact of the recent storm system has been disappointing from a water supply point of view. According to information from the Middle Atlantic River Forecast Center, accumulations of roughly 1/10 to 2/10 of an inch of precipitation fell in the Potomac watershed over the past 72 hours, and a watershed average of approximately 2/10 of an inch is expected over the next 3 days.

Special Conditions

Situational Awareness (Sunday, 2025-10-12)
Some areas of the basin received as much as 0.25 inches of precipitation over the past 24 hours. According to the Middle Atlantic River Forecast Center predictions, the next 3 days may see trace amounts to 0.5 inches of rain. 

Special Conditions
None

Situational Awareness (Saturday, 2025-10-11)

Situational Awareness (Friday, 2025-10-10)
No rainfall was observed over the past 24 hours. According to forecasts from the Middle Atlantic River Forecast Center, average basin rainfall over the next three days is expected to range from 0.25 to 1 inch. The week-long outlook anticipates similar or slightly higher totals across the basin.

Special Conditions
None

Situational Awareness (Thursday, 2025-10-09)
Potomac River flows are holding relatively steady. No appreciable amount of rain fell in the Potomac watershed yesterday. According to the Middle Atlantic River Forecast Center, 1/10 to 1/4 inch is expected over the next three days in most parts of the watershed, and an average accumulation of more than 1/2 inch is expected over the next 4 days.

Special Conditions
None

Situational Awareness (Wednesday, 2025-10-08)
Over the past 24 hours, precipitation across the basin ranged from trace amounts to more than 1.75 inches. The Middle Atlantic River Forecast Center predicts trace amounts of rain in parts of the basin over the next three days.

Special Conditions
None

Situational Awareness (Tuesday, 2025-10-07)

No precipitation was recorded in the basin over the past 24 hours. The Middle Atlantic River Forecast Center predicts 0.25-0.75 inches of rain across much of the basin over the next three days, with localized totals up to 1.5 inches possible. 

Special Conditions

None

Daily flows:

Little Falls gage flow 2025-10-06: 918 MGD (1420 cfs)

Situational Awareness (Monday, 2025-10-06)
According to Middle Atlantic River Forecast Center predictions, no rain fell in the Potomac watershed over the past 3 days, but approximately 1/2 inch is expected over the next 3 days.

Special Conditions
USGS stream gage website pages will not be updated due to the lapse in federal funding. However, at this time updated streamflow data continues to be available.

Situational Awareness (Sunday, 2025-10-05)
No rainfall has been recorded over the past 24 hours. According to the Middle Atlantic River Forecast Center, basin rainfall over the next three days is expected to range from 0.25 to 0.75 inches. The seven-day outlook indicates total rainfall of up to 0.75 inches in parts of the basin.

Special Conditions
None