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LONG BRANCH NEAR ANNANDALE

Streamflow Almanac


USGS 01654500

Streamflow trends over the past year at Long Branch Near Annandale in an interactive calendar format. View seasonal patterns on the river and see how an evolving climate has affecting streamflow levels over the past year. Click on any day to see what the streamflow was for that day, or sign up for a free account to view data for the past 92,293 days. The streamflow average over the past 10 days was 3.1 cfs, with a day to day variation of about 4.8cfs.

Key Ratios & Stats

Last Updated 2026-07-13
Gauge Height 2.52 ft
Observed Discharge 1cfs
Since Yesterday -27%
24hr Forecast 18 cfs
Percent of Normal 50%
Seasonal Volatility 146%
Peak Discharge 1,500 cfs
Average Discharge 2 cfs
Minimum Discharge 0 cfs

Featured Rivers

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Area Hydrology

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This tributary falls within the Middle Potomac-Anacostia-Occoquan watershed, a child of the greater Mid Atlantic region.



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