USGS · 01402000

MILLSTONE RIVER

USGS · 01402000LIVE

Millstone River at Blackwells Mills NJ

FRANKLIN TOWNSHIP, NJ40.4750°N, -74.5758°W Updated 19 hr ago

FLOW RATE

86cfs

AIR TEMP

102°F

WIND

8mph WSW

FISH INDEX

56SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

86cfs 44.3% vs avg

Optimal band: 82–112 cfs

PERIOD HIGH

142cfs

PERIOD LOW

86cfs

RUNNABLE

75%

last 7 day in band

Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

18.0in

-19% vs normal

17.97 in of precipitation so far this year, 19% below the 30-year normal of 22.3 in for this point in the season.

YTD Total

18.0in

This year so far

Normal to Date

22.3in

30-yr average

Typical Range

17.8–28.1in

10th–90th pct YTD

Departure

-19%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 2.87" · normal 3.29" (2.0–4.9)

Jan

Feb: 1.95" · normal 3.03" (1.7–5.2)

Feb

Mar: 3.43" · normal 4.25" (2.0–6.4)

Mar

Apr: 2.62" · normal 3.67" (2.0–5.6)

Apr

May: 3.73" · normal 3.63" (1.8–5.6)

May

Jun: 3.28" · normal 4.21" (1.9–7.7)

Jun

Jul: 0.10" (so far)· normal 4.24" (2.3–6.6)

Jul

Aug: normal 4.24" (1.4–7.2)

Aug

Sep: normal 4.16" (1.6–6.9)

Sep

Oct: normal 3.76" (1.4–5.6)

Oct

Nov: normal 3.02" (1.4–4.6)

Nov

Dec: normal 4.02" (1.9–6.1)

Dec

Baseline 1991–2020 · Source: Open-Meteo07:08 PM

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Station Location

40.4750, -74.5758

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DATA · USGS · NOAA · NWSUPDATED 2026-07-02 19:08 UTC

Site #01402000·USGS

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