USGS · 12323720

WILLOW CREEK

USGS · 12323720LIVE

Willow Creek at Opportunity, MT

DEER LODGE COUNTY, MT46.1072°N, -112.8106°W Updated 19 hr ago

FLOW RATE

12cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

12cfs 14.0% vs avg

Optimal band: 5–7 cfs

PERIOD HIGH

30cfs

PERIOD LOW

3cfs

RUNNABLE

58%

last 1 year in band

Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

11.3in

-17% vs normal

11.26 in of precipitation so far this year, 17% below the 30-year normal of 13.58 in for this point in the season.

YTD Total

11.3in

This year so far

Normal to Date

13.6in

30-yr average

Typical Range

11.6–16.3in

10th–90th pct YTD

Departure

-17%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 0.45" · normal 1.03" (0.6–1.5)

Jan

Feb: 1.29" · normal 1.10" (0.3–1.9)

Feb

Mar: 2.78" · normal 1.65" (0.9–2.3)

Mar

Apr: 1.83" · normal 2.47" (1.6–3.3)

Apr

May: 2.34" · normal 3.13" (2.0–4.3)

May

Jun: 2.23" · normal 3.64" (1.9–5.2)

Jun

Jul: 0.33" (so far)· normal 1.74" (0.5–3.3)

Jul

Aug: normal 1.39" (0.5–2.3)

Aug

Sep: normal 1.59" (0.5–2.7)

Sep

Oct: normal 1.57" (0.7–2.3)

Oct

Nov: normal 1.46" (0.7–2.4)

Nov

Dec: normal 1.26" (0.6–2.1)

Dec

Baseline 1991–2020 · Source: Open-Meteo03:46 PM

Your History · Willow Creek at Opportunity, MT

Track your history

Station Location

46.1072, -112.8106

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DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC

Site #12323720·USGS

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