When was Cooney Reservoir last stocked?

The latest reported stocking was Oct 13, 2026 (rainbow trout, 15,056 fish), according to Montana agency reports.

How often is Cooney Reservoir stocked?

Stocked 6 times in 2026, usually on Tuesdays, about every 28 days. Across all years on record, most stockings come in May and October.

Is Cooney Reservoir stocked often?

The most stocked water in Carbon County (11 stocking days on record). Stocked more often than 97% of Montana waters on our record. We count each day the agency reported stocking it.

What kind of trout are stocked in Cooney Reservoir?

Rainbow trout (11 stockings, 121,224 fish).

Cooney Reservoir trout stocking

Carbon County, Montana · lake · 4,253 ft elevation

Cooney Reservoir was last stocked 4 weeks ago (Oct 13, 2026). We have 11 stockings on record since May 19, 2025, 6 in the last 12 months (55,140 fish). Most stockings come in May and October. Species stocked: rainbow trout.

Last stocked

4 weeks ago

Oct 13, 2026

Next planned

Not announced

Last 12 months

6 stockings

55,140 fish

On record

11 stockings

since May 19, 2025

The most stocked water in Carbon County (11 stocking days on record).
Stocked more often than 97% of Montana waters on our record.

River conditions

USGS gage: Red Lodge Cr ab Cooney Re nr Boyd MT (2 km away).

Flow: 0 cfs
Gage height: 0.00 ft

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 Cooney Reservoir

Tonight
38°F
Mostly Cloudy
1% rain · wind 1 to 8 mph
Monday
60°F
Mostly Sunny
1% rain · wind 1 to 8 mph
Monday Night
37°F
Mostly Cloudy
5% rain · wind 5 mph
Tuesday
62°F
Mostly Sunny
6% rain · wind 3 to 13 mph
Tuesday Night
36°F
Partly Cloudy
wind 7 mph
Veterans Day
63°F
Sunny
wind 5 to 8 mph

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

When is Cooney Reservoir stocked?

Most stockings come in May and October. Stocked 6 times in 2026, usually on Tuesdays, about every 28 days.

By month, all years

Stockings of Cooney Reservoir by month, all years on record. This month is shown in blue.

Year by year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2026			1	1	2				1	1
2025					2					3

What is stocked

Species	Stockings	Fish	Fish per stocking	Typical size
Rainbow trout	11	121,224	11,020	9.8 in

Stocking history

20266 stockings · 55,140 fish

Date	Species	Fish	Size	Since previous	Hatchery
Oct 13Latest Tuesday · 4 weeks ago	Rainbow trout	15,056	9.8 in	4 weeks	Bluewater Springs Trout Hatchery
Sep 15 Tuesday · 8 weeks ago	Rainbow trout	3,655	10.2 in	117 days	Bluewater Springs Trout Hatchery
May 21 Thursday	Rainbow trout	5,181	9.0 in	1 day	Bluewater Springs Trout Hatchery
May 20 Wednesday	Rainbow trout	7,850	9.0 in	22 days	Bluewater Springs Trout Hatchery
Apr 28 Tuesday	Rainbow trout	13,439	6.5 in	50 days	Big Springs Trout Hatchery
Mar 9 Monday	Rainbow trout	9,959	2.4 in	144 days	Bluewater Springs Trout Hatchery

20255 stockings · 66,084 fish

Date	Species	Fish	Size	Since previous	Hatchery
Oct 16 Thursday	Rainbow trout	5,525	9.7 in	2 days	Bluewater Springs Trout Hatchery
Oct 14 Tuesday	Rainbow trout	17,640	11.6 in	1 day	Bluewater Springs Trout Hatchery
Oct 13 Monday	Rainbow trout	3,400	12.0 in	146 days	Bluewater Springs Trout Hatchery
May 20 Tuesday	Rainbow trout	24,037	9.7 in	1 day	Bluewater Springs Trout Hatchery
May 19 Monday	Rainbow trout	15,482	9.8 in		Bluewater 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 Cooney Reservoir?

Carbon 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 Cooney Reservoir

Wild Bill Lakelake · 21 mistocked Aug 24, 2026
Pfeifer Pondlake · 22 mistocked May 16, 2025
Lily Pad Lakelake · 22 mistocked Aug 5, 2025
Crater Lakelake · 22 mistocked Aug 5, 2025
Bokma Reservoirlake · 24 mistocked Dec 15, 2025

All stocked waters in Carbon County Stocked this week in Montana

Questions about Cooney Reservoir

When was Cooney Reservoir last stocked?: The latest reported stocking was Oct 13, 2026 (rainbow trout, 15,056 fish), according to Montana agency reports.
How often is Cooney Reservoir stocked?: Stocked 6 times in 2026, usually on Tuesdays, about every 28 days. Across all years on record, most stockings come in May and October.
Is Cooney Reservoir stocked often?: The most stocked water in Carbon County (11 stocking days on record). Stocked more often than 97% of Montana waters on our record. We count each day the agency reported stocking it.
What kind of trout are stocked in Cooney Reservoir?: Rainbow trout (11 stockings, 121,224 fish).