MEDIAN FLOW RATE · 1 YEAR
3cfs 46.6% vs avg
Optimal band: 3–5 cfs
PERIOD HIGH
45cfs
PERIOD LOW
3cfs
RUNNABLE
75%
last 1 year in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
19.8in
≈ normal
19.84 in of precipitation so far this year — about average for this point in the season (normal 22.14 in).
YTD Total
19.8in
This year so far
Normal to Date
22.1in
30-yr average
Typical Range
17.7–29.2in
10th–90th pct YTD
Departure
-10%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 2.87" · normal 3.27" (1.9–4.8)
Feb: 2.05" · normal 2.89" (1.6–4.8)
Mar: 3.26" · normal 4.08" (1.9–6.1)
Apr: 2.83" · normal 3.73" (2.2–5.6)
May: 4.84" · normal 3.88" (1.9–6.2)
Jun: 3.87" · normal 4.18" (2.1–7.7)
Jul: 0.12" (so far)· normal 4.51" (2.1–7.1)
Aug: normal 4.15" (1.7–6.5)
Sep: normal 4.90" (1.8–8.0)
Oct: normal 3.95" (1.6–6.4)
Nov: normal 3.14" (1.5–5.1)
Dec: normal 3.87" (1.9–6.0)
Baseline 1991–2020 · Source: Open-Meteo09:35 PM
Your History · LONG GREEN CREEK AT GLEN ARM, MD
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Weather Conditions
WEATHER CONDITIONS
TODAY
94°
74°
THU
103°
77°
FRI
102°
79°
SAT
99°
79°
SUN
98°
73°
MON
86°
70°
TUE
80°
69°
FISH INDEX
Temperature
Too Hot
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:42 AM
SUNSET
08:36 PM
14H 54M OF DAYLIGHT20H 9M REMAINING
MOON PHASE
Waning Gibbous
96% illuminated
Station Location
39.4547, -76.4789Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-02 00:27 UTC
Site #01584050·USGS
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