MEDIAN FLOW RATE · 30 DAY
42cfs 13.6% vs avg
Optimal band: 54–74 cfs
PERIOD HIGH
304cfs
PERIOD LOW
42cfs
RUNNABLE
29%
last 30 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
20.2in
≈ normal
20.24 in of precipitation so far this year — about average for this point in the season (normal 21.47 in).
YTD Total
20.2in
This year so far
Normal to Date
21.5in
30-yr average
Typical Range
17.1–25.2in
10th–90th pct YTD
Departure
-6%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 2.84" · normal 3.09" (1.7–4.6)
Feb: 1.51" · normal 2.85" (1.8–3.9)
Mar: 3.81" · normal 3.61" (2.0–5.6)
Apr: 2.69" · normal 3.76" (1.9–5.7)
May: 4.25" · normal 3.44" (1.8–5.4)
Jun: 4.43" · normal 3.76" (2.0–6.3)
Jul: 0.71" (so far)· normal 3.66" (2.2–5.3)
Aug: normal 3.46" (1.8–5.7)
Sep: normal 3.44" (1.9–5.5)
Oct: normal 4.28" (1.5 –7.3)
Nov: normal 3.26" (1.5–4.8)
Dec: normal 3.90" (2.4–5.6)
Baseline 1991–2020 · Source: Open-Meteo03:47 PM
Your History · WILLIAMS RIVER NEAR ROCKINGHAM VT
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Station Location
43.1917, -72.4851Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC
Site #01153550·USGS
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