MEDIAN FLOW RATE · 30 DAY
22cfs 76.9% vs avg
Optimal band: 3–5 cfs
PERIOD HIGH
22cfs
PERIOD LOW
4cfs
RUNNABLE
90%
last 30 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
20.1in
≈ normal
20.14 in of precipitation so far this year — about average for this point in the season (normal 22.88 in).
YTD Total
20.1in
This year so far
Normal to Date
22.9in
30-yr average
Typical Range
18.7–28.6in
10th–90th pct YTD
Departure
-12%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 2.71" · normal 3.35" (2.2–4.3)
Feb: 2.29" · normal 3.02" (1.7–5.0)
Mar: 3.59" · normal 4.18" (2.0–6.1)
Apr: 2.51" · normal 3.89" (2.1–6.2)
May: 4.40" · normal 3.81" (1.9–5.7)
Jun: 4.54" · normal 4.37" (2.5–7.7)
Jul: 0.09" (so far)· normal 4.34" (2.3–6.2)
Aug: normal 4.10" (2.0–6.4)
Sep: normal 4.62" (1.8–7.7)
Oct: normal 3.91" (1.9–6.3)
Nov: normal 3.01" (1.5–4.4)
Dec: normal 3.99" (1.9–5.8)
Baseline 1991–2020 · Source: Open-Meteo06:13 AM
Your History · Marsh Creek near Downingtown, PA
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Weather Conditions
WEATHER CONDITIONS
TODAY
102°
77°
FRI
103°
79°
SAT
94°
72°
SUN
92°
71°
MON
74°
66°
TUE
69°
64°
WED
74°
62°
FISH INDEX
Temperature
Warm
Wind
Calm
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:38 AM
SUNSET
08:35 PM
14H 57M OF DAYLIGHT13H 7M REMAINING
MOON PHASE
Waning Gibbous
94% illuminated
Station Location
40.0553, -75.7163Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-02 07:28 UTC
Site #01480685·USGS
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