MEDIAN FLOW RATE · 30 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
22.8in
≈ normal
22.83 in of precipitation so far this year — about average for this point in the season (normal 23.55 in).
YTD Total
22.8in
This year so far
Normal to Date
23.6in
30-yr average
Typical Range
18.6–30.4in
10th–90th pct YTD
Departure
-3%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 2.65" · normal 3.54" (2.2–5.3)
Feb: 1.63" · normal 3.05" (1.8–5.0)
Mar: 4.69" · normal 4.22" (2.4–6.7)
Apr: 2.71" · normal 3.80" (1.9–6.4)
May: 3.31" · normal 3.81" (1.7–5.7)
Jun: 4.08" · normal 4.34" (2.1–7.5)
Jul: 3.76" (so far)· normal 4.24" (1.9–6.7)
Aug: normal 4.08" (1.3–6.8)
Sep: normal 4.43" (1.5–7.3)
Oct: normal 4.03" (1.5–6.4)
Nov: normal 3.23" (1.3–4.8)
Dec: normal 4.04" (1.8–5.7)
Baseline 1991–2020 · Source: Open-Meteo09:49 AM
Your History · South Branch Raritan River at Four Bridges NJ
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Station Location
40.8061, -74.7406Loading map…
DATA · USGS · NOAA · NWS
Site #01396190·USGS
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