MEDIAN FLOW RATE · 7 DAY
0cfs 66.4% vs avg
Optimal band: 3–5 cfs
PERIOD HIGH
4cfs
PERIOD LOW
1cfs
RUNNABLE
67%
last 7 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
19.0in
≈ normal
18.98 in of precipitation so far this year — about average for this point in the season (normal 20.82 in).
YTD Total
19.0in
This year so far
Normal to Date
20.8in
30-yr average
Typical Range
15.8–26.1in
10th–90th pct YTD
Departure
-9%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 3.07" · normal 3.12" (1.7–4.5)
Feb: 2.78" · normal 2.86" (1.7–4.5)
Mar: 3.41" · normal 3.89" (1.7–5.2)
Apr: 2.57" · normal 3.49" (1.7–5.0)
May: 3.99" · normal 4.03" (2.1–6.5)
Jun: 3.16" (so far)· normal 3.65" (1.7–6.0)
Jul: normal 4.53" (2.1–7.0)
Aug: normal 3.92" (1.9–6.0)
Sep: normal 4.81" (1.6–8.3)
Oct: normal 3.49" (1.2–5.2)
Nov: normal 3.04" (1.1–5.5)
Dec: normal 3.56" (2.0–5.4)
Baseline 1991–2020 · Source: Open-Meteo03:02 AM
Your History · DEAD RUN AT WHANN AVENUE NEAR MCLEAN, VA
Track your history
Sign in to track your sessions at DEAD RUN AT WHANN AVENUE NEAR MCLEAN, VA — best days, monthly trends, and time on the water.
Sign inSPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
81°
71°
SUN
81°
70°
MON
88°
70°
TUE
94°
70°
WED
102°
74°
THU
104°
80°
FRI
102°
82°
FISH INDEX
Temperature
Warm
Wind
Calm
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:45 AM
SUNSET
08:38 PM
14H 53M OF DAYLIGHT16H 15M REMAINING
MOON PHASE
Waxing Gibbous
91% illuminated
Station Location
38.9598, -77.1757Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-27 04:23 UTC
Site #01646305·USGS
Create a free account to save favorites, set flow alerts, and track conditions