Situational Awareness (Tuesday, 2026-09-22)
Between 0.1 and 2 inches of rain fell over the past 24 hours, with the greatest accumulations occurring in the northern portions of the basin. The next 3 days can expect to see an additional 0.5 to 2 inches of rainfall according to the Middle Atlantic Forecast Center predictions, with the Virginia and West Virginia portions of the basin expecting accumulations exceeding 1 inch.
Situational Awareness (Monday, 2026-09-21)
0.1 to 0.5 inches of rain fell in the basin over the past 24 hours, primarily in the western portion of the basin. According to the Middle Atlantic River Forecast Center, chances for rain will persist throughout the week, with widespread showers expected Tuesday. Forecast rainfall through Wednesday morning ranges from 0.5 to 2.5 inches, with amounts exceeding 1 inch expected across western and southern Pennsylvania, Maryland, and Virginia.
Situational Awareness (Sunday, 2026-09-20):
According to current precipitation forecasts, accumulated rainfall in the Potomac watershed will be approximately 1.5 to 2 inches over the next 3 days and 2 to 3 inches over the next 5 to 7 days, with higher amounts possible in portions of the watershed.
Situational Awareness (Saturday, 2026-09-19)
According to forecasts provided by the Middle Atlantic River Forecast Center, accumulated rainfall in the Potomac watershed will be approximately 0.5 inches over the next 3 days and 1 to 2 inches over the next 5 days.
Special Conditions
Situational Awareness (Friday, 2026-09-18)
According to the Middle Atlantic River Forecast Center (MARFC), the basin saw between 0.01 and 0.5 inches of rain during the previous 24 hours. They predict the next three days may see an additional 0.1 to 0.75 inches of rain, with a projected seven-day total of up to 3 to 4 inches.
Situational Awareness (Thursday, 2026-09-17)
No appreciable rain has fallen in the basin over the past 24 hours. According to the Middle Atlantic River Forecast Center predictions, the next 24 hours may see between 0.1 to 0.5 inches of rain. The week-long outlook expects a total of approximately 1 to 2 inches of rain in the basin.
Special Conditions
Intra-daily flow fluctuations at Potomac River gages, including Point of Rocks, are occurring due to upstream dam operations associated with eel passage.
Situational Awareness (Wednesday, 2026-09-16)
No precipitation was observed in the Potomac basin yesterday. The Middle Atlantic River Forecast Center indicates that 0.1 to 0.5 inches of rain is forecast over the next three days across the basin.
Special Conditions
Intra-daily flow fluctuations at Potomac River gages, including Point of Rocks, are occurring due to upstream dam operations associated with eel passage.
Situational Awareness (Tuesday, 2026-09-15)
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 2000 cubic feet per second (cfs), CO-OP's daily monitoring threshold.
No precipitation was observed across the Potomac basin yesterday. The Middle Atlantic River Forecast Center indicates that 0.1 to 0.25 inches of rain is forecast over the next three days, with the largest amounts expected in the northwestern corner of the basin.
Situational Awareness (Sunday, 2026-08-09)
Flows at the Point of Rocks gage has stayed above 2,000 cfs and are predicted to remain so through at least the beginning of this week. Additionally, according to the Middle Atlantic River Forecast Center predictions, the next 3 days are forecasted to see between 0.1 and 0.5 inches of rain. As such, CO-OP is suspending its daily drought monitoring and reporting. This phase of CO-OP's drought response is triggered when daily flows at USGS's Point of Rocks gage fall below 2,000 cfs.
Situational Awareness (Saturday, 2026-08-08)
Flows continue to hover around 2,000 cfs, the CO-OP threshold for daily drought monitoring. Over the past 24 hours, most portions of the basin have received trace amounts to 0.5 inches of rain. According to the Middle Atlantic River Forecast Center predictions, little rain is expected over the next 3 days. The 10-day outlook expects a total of about one inch of rain in the basin.