Waterlands
Difficult Run
USGS · 01646000
DIFFICULT RUN
USGS · 01646000LIVE

DIFFICULT RUN NEAR GREAT FALLS, VA

VIRGINIA38.9759°N, -77.2458°W Updated 17 hr ago
FLOW RATE
23cfs
GAUGE HT
2.86ft
WATER TEMP
64°F
Flow Rate Historical Avg
MEDIAN FLOW RATE · 7 DAY
23cfs 96.9% vs avg
Optimal band: 25–33 cfs
PERIOD HIGH
494cfs
PERIOD LOW
9cfs
RUNNABLE
13%
last 7 day in band

Gauge Height

2.86ft

Water Temperature

64.2°F

Water Turbidity

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Station Location

38.9759, -77.2458
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DATA · USGS · NOAA · NWSUPDATED 2026-10-16 00:00 UTC
Site #01646000·USGS

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