When was Willow Creek Reservoir last stocked?

The latest reported stocking was Apr 29, 2026 (kokanee, 10,000 fish), according to Montana agency reports.

How often is Willow Creek Reservoir stocked?

It was stocked 1 times in the last 12 months.

What kind of trout are stocked in Willow Creek Reservoir?

Kokanee (2 stockings, 20,000 fish).

How warm is the water near Willow Creek Reservoir?

The USGS gage read 58°F on Sep 25. Prime range for trout (about 50 to 65°F): fish are feeding actively.

Willow Creek Reservoir trout stocking

Montana · lake

Willow Creek Reservoir was last stocked 5 months ago (Apr 29, 2026). We have 2 stockings on record since May 6, 2025, 1 in the last 12 months (10,000 fish). Species stocked: kokanee.

Last stocked

5 months ago

Apr 29, 2026

Next planned

Not announced

Last 12 months

1 stocking

10,000 fish

Water temperature

58°F

Ideal for trout

River conditions

USGS gage: Willow Creek near Harrison MT (4 km away).

Water temperature: 58°F
Flow: 8 cfs; about normal for the last six weeks
Gage height: 1.11 ft

Ideal for trout. Prime range for trout (about 50 to 65°F): fish are feeding actively.

Water temperature (daily high), last six weeks (°F), daily. Latest: 64 °F on Sep 23. The green band is the ideal range for trout.

Streamflow, last six weeks (cfs), daily. Latest: 8 cfs on Sep 23.

Latest reading Sep 25, 2026, 3:15 AM UTC. USGS data are provisional. Gage page at USGS.

Weather at Willow Creek Reservoir

Tonight
49°F
Mostly Clear
wind 3 to 8 mph
Friday
82°F
Sunny
wind 3 to 28 mph
Friday Night
42°F
Partly Cloudy
3% rain · wind 0 to 22 mph
Saturday
68°F
Mostly Sunny
wind 0 to 3 mph
Saturday Night
41°F
Mostly Cloudy
1% rain · wind 0 to 6 mph
Sunday
66°F
Mostly Cloudy
9% rain · wind 0 mph

Forecast from the National Weather Service for this location, refreshed hourly.

What is stocked

Species	Stockings	Fish	Fish per stocking	Typical size
Kokanee	2	20,000	10,000	3.4 in

Stocking history

Date	Species	Fish	Pounds	Hatchery
Apr 29, 2026	Kokanee	10,000		Giant Springs Trout Hatchery
May 6, 2025	Kokanee	10,000		Giant Springs Trout Hatchery

From Montana fish and wildlife agency reports, collected nightly and kept after the agency takes them down. Agencies revise reports; check the agency's report before you go.

Where is Willow Creek Reservoir?

Montana. The marker is the agency's location for this water; streams are often stocked at several access points.

Directions Larger map

Stocked waters near Willow Creek Reservoir

Upper Sureshot Lakelake · 15 mistocked Jul 24, 2025
Whitehall Community Pondlake · 22 mistocked Jun 2, 2026
Whitehall Rotary Pondlake · 22 mistocked Jul 23, 2025

Stocked this week in Montana

Questions about Willow Creek Reservoir

When was Willow Creek Reservoir last stocked?: The latest reported stocking was Apr 29, 2026 (kokanee, 10,000 fish), according to Montana agency reports.
How often is Willow Creek Reservoir stocked?: It was stocked 1 times in the last 12 months.
What kind of trout are stocked in Willow Creek Reservoir?: Kokanee (2 stockings, 20,000 fish).
How warm is the water near Willow Creek Reservoir?: The USGS gage read 58°F on Sep 25. Prime range for trout (about 50 to 65°F): fish are feeding actively.