USGS · 06483290

ROCK RIVER

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Rock River below Tom Creek at Rock Rapids, IA

IOWA43.4231°N, -96.1649°W Updated 1 hr ago

FLOW RATE

201cfs

AIR TEMP

80°F

WIND

5mph E

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

201cfs 66.2% vs avg

Optimal band: 71–97 cfs

PERIOD HIGH

532cfs

PERIOD LOW

39cfs

RUNNABLE

21%

last 1 year in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

16.4in

≈ normal

16.37 in of precipitation so far this year — about average for this point in the season (normal 18.02 in).

YTD Total

16.4in

This year so far

Normal to Date

18.0in

30-yr average

Typical Range

14.7–23.2in

10th–90th pct YTD

Departure

-9%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 0.43" · normal 0.83" (0.4–1.4)

Jan

Feb: 0.33" · normal 0.99" (0.4–1.5)

Feb

Mar: 1.60" · normal 1.95" (0.8–3.4)

Mar

Apr: 4.14" · normal 3.57" (1.7–5.5)

Apr

May: 4.07" · normal 4.49" (2.2–6.5)

May

Jun: 4.38" · normal 5.41" (2.8–10.6)

Jun

Jul: 1.43" (so far)· normal 3.10" (1.1–5.0)

Jul

Aug: normal 3.39" (1.2–6.0)

Aug

Sep: normal 3.03" (0.8–5.0)

Sep

Oct: normal 2.45" (1.0–4.5)

Oct

Nov: normal 1.69" (0.3–3.6)

Nov

Dec: normal 1.07" (0.4–1.8)

Dec

Baseline 1991–2020 · Source: Open-Meteo01:14 AM

Your History · Rock River below Tom Creek at Rock Rapids, IA

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Station Location

43.4231, -96.1649

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DATA · USGS · NOAA · NWSUPDATED 2026-07-06 00:00 UTC

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