When was Pinnow Reservoir last stocked?

The latest reported stocking was May 6, 2026 (rainbow trout, 500 fish), according to Montana agency reports.

How often is Pinnow Reservoir stocked?

It was stocked once in the last 12 months.

Is Pinnow Reservoir stocked often?

Tied for the most stocked water in Fallon 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 Pinnow Reservoir?

Rainbow trout (2 stockings, 1,000 fish).

Pinnow Reservoir trout stocking

Fallon County, Montana · lake · 3,100 ft elevation

Pinnow Reservoir was last stocked 6 months ago (May 6, 2026). We have 2 stockings on record since May 13, 2025, 1 in the last 12 months (500 fish). Species stocked: rainbow trout.

Last stocked

6 months ago

May 6, 2026

Next planned

Not announced

Last 12 months

1 stocking

500 fish

On record

2 stockings

since May 13, 2025

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

Weather at Pinnow Reservoir

Today
46°F
Sunny
wind 7 to 12 mph
Tonight
27°F
Mostly Clear
wind 5 mph
Wednesday
50°F
Mostly Sunny
wind 5 to 12 mph
Wednesday Night
29°F
Mostly Cloudy
wind 5 to 9 mph
Thursday
53°F
Mostly Sunny
wind 5 mph
Thursday Night
30°F
Partly Cloudy
wind 6 mph

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

What is stocked

Species	Stockings	Fish	Fish per stocking	Typical size
Rainbow trout	2	1,000	500	2.8 in

Stocking history

20261 stocking · 500 fish

Date	Species	Fish	Size	Since previous	Hatchery
May 6Latest Wednesday	Rainbow trout	500	2.8 in	358 days	Miles City Fish Hatchery

20251 stocking · 500 fish

Date	Species	Fish	Size	Since previous	Hatchery
May 13 Tuesday	Rainbow trout	500	2.3 in		Miles City Fish 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 Pinnow Reservoir?

Fallon 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 Pinnow Reservoir

Pinnow Reservoir 2lake · 1 mistocked May 6, 2026
Holtan Reservoirlake · 6 mistocked May 28, 2026
Lake Bakerlake · 7 mistocked May 28, 2025
Rost Pondlake · 9 mistocked May 13, 2025
Maier Pondlake · 15 mistocked May 13, 2025
Schweigert Damlake · 15 mistocked May 6, 2026
Rath Pondlake · 19 mistocked May 13, 2025
Pruett Pondlake · 24 mistocked May 6, 2026

All stocked waters in Fallon County Stocked this week in Montana

Questions about Pinnow Reservoir

When was Pinnow Reservoir last stocked?: The latest reported stocking was May 6, 2026 (rainbow trout, 500 fish), according to Montana agency reports.
How often is Pinnow Reservoir stocked?: It was stocked once in the last 12 months.
Is Pinnow Reservoir stocked often?: Tied for the most stocked water in Fallon 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 Pinnow Reservoir?: Rainbow trout (2 stockings, 1,000 fish).