POTOMAC RIVER AT POINT OF ROCKS, MD

FREDERICK COUNTY, MD39.2736°N, -77.5431°W Updated 7 hr ago

FLOW RATE

2,014cfs

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

2,014cfs 61.9% vs avg

Optimal band: 2,121–2,869 cfs

PERIOD HIGH

5,601cfs

PERIOD LOW

2,014cfs

RUNNABLE

55%

last 30 day in band

Precipitation History

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39.2736, -77.5431

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DATA · USGS · NOAA · NWSUPDATED 2026-07-05 00:00 UTC

Site #01638500·USGS

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