MEDIAN FLOW RATE · 1 YEAR
24cfs 42.5% vs avg
Optimal band: 32–44 cfs
PERIOD HIGH
951cfs
PERIOD LOW
4cfs
RUNNABLE
17%
last 1 year in band
Gauge Height
1.65ft
Weather Map
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Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
23.5in
≈ normal
23.53 in of precipitation so far this year — about average for this point in the season (normal 24.49 in).
YTD Total
23.5in
This year so far
Normal to Date
24.5in
30-yr average
Typical Range
19.3–27.9in
10th–90th pct YTD
Departure
-4%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 3.06" · normal 3.49" (2.0–5.1)
Feb: 1.62" · normal 3.13" (2.0–4.6)
Mar: 5.52" · normal 4.05" (2.5–6.1)
Apr: 2.72" · normal 3.96" (2.4–5.6)
May: 3.78" · normal 3.98" (2.5–5.8)
Jun: 5.36" · normal 4.22" (2.5–6.9)
Jul: 1.49" (so far)· normal 4.05" (2.6–5.8)
Aug: normal 3.70" (1.9–6.2)
Sep: normal 3.93" (2.3–7.0)
Oct: normal 4.69" (1.9–7.4)
Nov: normal 3.61" (1.9–5.1)
Dec: normal 4.31" (2.7–5.8)
Baseline 1991–2020 · Source: Open-Meteo20:45 UTC
Your History · GREEN RIVER AT WILLIAMSTOWN, MA
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Weather Conditions
WEATHER CONDITIONS
TODAY
84°
59°
TUE
95°
68°
WED
88°
67°
THU
87°
64°
FRI
78°
54°
SAT
77°
55°
SUN
71°
59°
FISH INDEX
Temperature
Too Hot
Wind
Moderate
Pressure
Stable
Moon Phase
Peak Activity
DAYLIGHT
SUNRISE
05:27 AM
SUNSET
08:30 PM
15H 3M OF DAYLIGHT
MOON PHASE
New Moon
1% illuminated
PEAK ACTIVITY
Station Location
42.7089, -73.1968Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-13 00:00 UTC
Site #01333000·USGS
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