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

DIFFICULT RUN NEAR GREAT FALLS, VA

RESTON, VA38.9759°N, -77.2458°W Updated 1 hr ago
FLOW RATE
26.8cfs
GAUGE HT
2.93ft
WATER TEMP
64°F
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
26.8cfs 15.8% vs avg
Optimal band: 18–25 cfs
PERIOD HIGH
26.8cfs
PERIOD LOW
20cfs
RUNNABLE
90%
last 1 day in band

Gauge Height

2.93ft

Water Temperature

63.9°F

Water Turbidity

Weather Map

Loading weather map…

Your History · DIFFICULT RUN NEAR GREAT FALLS, VA

Track your history

Sign in to track your sessions at DIFFICULT RUN NEAR GREAT FALLS, VA: best days, monthly trends, and time on the water.

Sign in
SPONSORED

Station Location

38.9759, -77.2458
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-10-16 13:15 UTC
Site #01646000·USGS

Create a free account to save favorites, set flow alerts, and track conditions

Sign up free