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 once in the last 12 months.

Is Willow Creek Reservoir stocked often?

Tied for the most stocked water in Madison County (2 stocking days on record). Stocked about as often as a typical Montana water on our record. We count each day the agency reported stocking it.

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 32°F on Nov 9. Trout are sluggish below about 45°F. Fish slow and deep, midday is often best.

Willow Creek Reservoir trout stocking

Madison County, Montana · lake · 4,727 ft elevation

Willow Creek Reservoir was last stocked 6 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

6 months ago

Apr 29, 2026

Next planned

Not announced

Last 12 months

1 stocking

10,000 fish

Water temperature

32°F

Cold for trout

Tied for the most stocked water in Madison County (2 stocking days on record).
Stocked about as often as a typical Montana water on our record.

River conditions

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

Water temperature: 32°F
Flow: 0 cfs
Gage height: 0.00 ft

Cold for trout. Trout are sluggish below about 45°F. Fish slow and deep, midday is often best.

Water temperature (daily high), last six weeks (°F), daily. Latest: 32 °F on Nov 8. The green band is the ideal range for trout.

Streamflow, last six weeks (cfs), daily. Latest: 0 cfs on Nov 8.

Latest reading Nov 9, 2026, 8:15 AM UTC. USGS data are provisional. Gage page at USGS.

Weather at Willow Creek Reservoir

This Afternoon
61°F
Mostly Cloudy
2% rain · wind 9 to 15 mph
Tonight
33°F
Mostly Cloudy
3% rain · wind 0 to 12 mph
Monday
55°F
Mostly Cloudy
2% rain · wind 0 to 3 mph
Monday Night
37°F
Mostly Cloudy
5% rain · wind 3 to 12 mph
Tuesday
55°F
Mostly Sunny
4% rain · wind 6 to 18 mph
Tuesday Night
34°F
Partly Cloudy
wind 6 to 10 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

20261 stocking · 10,000 fish

Date	Species	Fish	Size	Since previous	Hatchery
Apr 29Latest Wednesday	Kokanee	10,000	3.4 in	358 days	Giant Springs Trout Hatchery

20251 stocking · 10,000 fish

Date	Species	Fish	Size	Since previous	Hatchery
May 6 Tuesday	Kokanee	10,000	3.4 in		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. Seasons and limits: Montana fishing regulations.

Where is Willow Creek Reservoir?

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

Directions Larger map Montana fishing regulations

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

All stocked waters in Madison County 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 once in the last 12 months.
Is Willow Creek Reservoir stocked often?: Tied for the most stocked water in Madison County (2 stocking days on record). Stocked about as often as a typical Montana water on our record. We count each day the agency reported stocking it.
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 32°F on Nov 9. Trout are sluggish below about 45°F. Fish slow and deep, midday is often best.