USGS · 05430500

ROCK RIVER

USGS · 05430500LIVE

ROCK RIVER AT AFTON, WI

TOWN OF ROCK, WI42.6136°N, -89.0717°W Updated 23 hr ago

FLOW RATE

1,762cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

1,762cfs 36.4% vs avg

Optimal band: 1,838–2,486 cfs

PERIOD HIGH

2,974cfs

PERIOD LOW

1,687cfs

RUNNABLE

45%

last 30 day in band

Precipitation History

Precipitation · YTD

Wet

Wetter than normal

2026 to date

24.4in

+30% vs normal

24.36 in of precipitation so far this year, 30% above the 30-year normal of 18.74 in for this point in the season.

YTD Total

24.4in

This year so far

Normal to Date

18.7in

30-yr average

Typical Range

13.0–24.3in

10th–90th pct YTD

Departure

+30%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.78" · normal 1.81" (1.0–2.9)

Jan

Feb: 0.81" · normal 1.79" (0.7–3.6)

Feb

Mar: 4.44" · normal 2.41" (1.2–4.2)

Mar

Apr: 7.67" · normal 4.10" (2.5–5.7)

Apr

May: 1.95" · normal 4.03" (1.7–6.4)

May

Jun: 6.48" · normal 4.18" (1.8–7.0)

Jun

Jul: 1.24" (so far)· normal 3.62" (2.1–5.8)

Jul

Aug: normal 3.46" (1.3–5.7)

Aug

Sep: normal 3.28" (1.3–6.2)

Sep

Oct: normal 2.87" (1.2–5.3)

Oct

Nov: normal 2.31" (0.8–3.9)

Nov

Dec: normal 2.08" (0.9–4.1)

Dec

Baseline 1991–2020 · Source: Open-Meteo11:58 PM

Your History · ROCK RIVER AT AFTON, WI

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Station Location

42.6136, -89.0717

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DATA · USGS · NOAA · NWSUPDATED 2026-07-05 00:00 UTC

Site #05430500·USGS

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