When was Rattlesnake Reservoir last stocked?

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

How often is Rattlesnake Reservoir stocked?

It was stocked once in the last 12 months.

Is Rattlesnake Reservoir stocked often?

Tied for the most stocked water in Dawson 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 Rattlesnake Reservoir?

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

Rattlesnake Reservoir trout stocking

Dawson County, Montana · lake · 2,421 ft elevation

Rattlesnake 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 Dawson County (2 stocking days on record).
Stocked about as often as a typical Montana water on our record.

Weather at Rattlesnake Reservoir

This Afternoon
64°F
Mostly Sunny
wind 7 mph
Tonight
36°F
Mostly Cloudy
2% rain · wind 5 mph
Monday
55°F
Mostly Sunny
wind 2 to 8 mph
Monday Night
37°F
Mostly Cloudy
8% rain · wind 3 mph
Tuesday
57°F
Slight Chance Light Rain
15% rain · wind 3 to 13 mph
Tuesday Night
36°F
Haze
1% rain · wind 7 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 Rattlesnake Reservoir?

Dawson 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 Rattlesnake Reservoir

Oil Pump Reservoirlake · 6 mistocked May 6, 2026
Hollecker Lakelake · 16 mistocked May 12, 2026
Burman Pondlake · 18 mistocked May 6, 2026
Wibaux Fish Pondlake · 21 mistocked Jun 10, 2026
Ayers Pond (; Courtney Ayers Pond)lake · 22 mistocked Aug 15, 2025
Marshall Reservoirlake · 24 mistocked Apr 9, 2025
Pruett Pondlake · 24 mistocked May 6, 2026

All stocked waters in Dawson County Stocked this week in Montana

Questions about Rattlesnake Reservoir

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