Waterlands
Horsepen Run
USGS · 0164425950
HORSEPEN RUN
USGS · 0164425950LIVE

HORSEPEN RUN AB HORSEPEN RUN TRIB NR HERNDON, VA

RESTON, VA38.9226°N, -77.4058°W
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
cfs
No flow data available
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

22.3in

≈ normal

22.28 in of precipitation so far this year — about average for this point in the season (normal 21.97 in).

YTD Total

22.3in

This year so far

Normal to Date

22.0in

30-yr average

Typical Range

16.4–28.5in

10th–90th pct YTD

Departure

+1%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 3.01" · normal 3.07" (1.7–4.5)
Jan
Feb: 2.50" · normal 2.79" (1.6–4.5)
Feb
Mar: 4.06" · normal 3.83" (1.8–4.9)
Mar
Apr: 2.05" · normal 3.49" (1.6–5.0)
Apr
May: 3.81" · normal 3.85" (2.1–6.5)
May
Jun: 3.40" · normal 3.48" (1.6–5.8)
Jun
Jul: 3.46" (so far)· normal 3.93" (2.0–6.4)
Jul
Aug: normal 3.49" (1.9–4.5)
Aug
Sep: normal 4.50" (1.4–8.4)
Sep
Oct: normal 3.41" (1.0–5.2)
Oct
Nov: normal 3.00" (1.1–5.2)
Nov
Dec: normal 3.49" (2.0–5.4)
Dec
Baseline 19912020 · Source: Open-Meteo07:05 UTC
Your History · HORSEPEN RUN AB HORSEPEN RUN TRIB NR HERNDON, VA

Track your history

Sign in to track your sessions at HORSEPEN RUN AB HORSEPEN RUN TRIB NR HERNDON, VA — best days, monthly trends, and time on the water.

Sign in
SPONSORED

Station Location

38.9226, -77.4058
Loading map…
DATA · USGS · NOAA · NWS
Site #0164425950·USGS

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