When was Boysen Reservoir last stocked?

The latest reported stocking was May 1 to 31, 2026 (kokanee salmon, 59,999 fish), according to Wyoming agency reports.

How often is Boysen Reservoir stocked?

It was stocked 2 times in the last 12 months. Across all years on record, most stockings come in October.

Is Boysen Reservoir stocked often?

The second most stocked of 81 waters in Fremont County. Stocked more often than 94% of Wyoming waters on our record. We count each day the agency reported stocking it.

What kind of trout are stocked in Boysen Reservoir?

Rainbow trout (27 stockings, 1,006,628 fish); Kokanee salmon (8 stockings, 369,312 fish); Bear River cutthroat trout (6 stockings, 117,220 fish); Snake River cutthroat trout (1 stocking, 2,500 fish); Yellowstone cutthroat trout (1 stocking, 19,240 fish).

Boysen Reservoir trout stocking

Fremont County, Wyoming · lake · about 4,726 ft elevation

Boysen Reservoir was last stocked 5 months ago (May 1 to 31, 2026). We have 27 stockings on record since Oct 1, 2016, 2 in the last 12 months (169,961 fish). Most stockings come in October. Species stocked: rainbow trout, kokanee salmon, Bear River cutthroat trout, Snake River cutthroat trout, Yellowstone cutthroat trout.

Last stocked

5 months ago

May 1 to 31, 2026

Next planned

Not announced

Last 12 months

2 stockings

169,961 fish

On record

27 stockings

since Oct 1, 2016

The second most stocked of 81 waters in Fremont County.
Stocked more often than 94% of Wyoming waters on our record.

Weather at Boysen Reservoir

Tonight
53°F
Mostly Cloudy
5% rain · wind 1 to 9 mph
Tuesday
72°F
Sunny
4% rain · wind 1 mph
Tuesday Night
49°F
Mostly Clear
2% rain · wind 2 mph
Wednesday
73°F
Sunny
wind 2 mph
Wednesday Night
49°F
Mostly Clear
wind 3 to 7 mph
Thursday
72°F
Sunny
wind 2 to 8 mph

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

When is Boysen Reservoir stocked?

Most stockings come in October.

By month, all years

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

Year by year

	Apr	May	Jul	Aug	Sep	Oct	Nov	Dec
2026		1
2025		1				1
2024		1				1		1
2023		1		1	1	1
2022			1		1	1	1
2021	1	1			1	1	1
2020	1					1
2019						1	1

What is stocked

Species	Stockings	Fish	Fish per stocking	Typical size
Rainbow trout	27	1,006,628	37,283	8.4 in
Kokanee salmon	8	369,312	46,164	3.3 in
Bear River cutthroat trout	6	117,220	19,537	3.9 in
Snake River cutthroat trout	1	2,500	2,500	7.3 in
Yellowstone cutthroat trout	1	19,240	19,240	4.2 in

Stocking history

20261 stocking · 59,999 fish

Date	Species	Fish	Size
MayLatest sometime this month	Kokanee salmon	59,999	2.8 in

20252 stockings · 169,448 fish

Date	Species	Fish	Size
October sometime this month	Rainbow trout	109,962	8.3 in
May sometime this month	Kokanee salmon	59,486	2.5 in

20243 stockings · 179,891 fish

Date	Species	Fish	Size
December sometime this month	Kokanee salmon	2,600	9.5 in
October sometime this month	Rainbow trout	107,164	8.1 in
May sometime this month	Kokanee salmon	70,127	2.4 in

20234 stockings · 238,963 fish

October Bear River cutthroat trout, rainbow trout, 25,244 fish
September rainbow trout, 105,534 fish
August rainbow trout, 5,006 fish
May kokanee salmon, 103,179 fish

20224 stockings · 205,144 fish

November Bear River cutthroat trout, rainbow trout, 73,940 fish
October Bear River cutthroat trout, rainbow trout, 42,225 fish
September rainbow trout, 60,179 fish
July kokanee salmon, 28,800 fish

20215 stockings · 194,088 fish

November rainbow trout, 14,935 fish
October rainbow trout, 103,953 fish
September Bear River cutthroat trout, 30,079 fish
May kokanee salmon, 31,401 fish
April kokanee salmon, 13,720 fish

20202 stockings · 115,915 fish

October Bear River cutthroat trout, rainbow trout, 110,637 fish
April Bear River cutthroat trout, 5,278 fish

20192 stockings · 100,557 fish

November rainbow trout, 18,851 fish
October rainbow trout, 81,706 fish

20181 stocking · 93,828 fish

October rainbow trout, 93,828 fish

20172 stockings · 61,272 fish

October rainbow trout, 58,772 fish
July Snake River cutthroat trout, 2,500 fish

20161 stocking · 95,795 fish

October rainbow trout, Yellowstone cutthroat trout, 95,795 fish

From Wyoming 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: Wyoming fishing regulations.

Where is Boysen Reservoir?

Fremont County, Wyoming. Approximate: the marker is the USGS place-name point for this water, not an agency location.

Directions Larger map Wyoming fishing regulations

Questions about Boysen Reservoir

When was Boysen Reservoir last stocked?: The latest reported stocking was May 1 to 31, 2026 (kokanee salmon, 59,999 fish), according to Wyoming agency reports.
How often is Boysen Reservoir stocked?: It was stocked 2 times in the last 12 months. Across all years on record, most stockings come in October.
Is Boysen Reservoir stocked often?: The second most stocked of 81 waters in Fremont County. Stocked more often than 94% of Wyoming waters on our record. We count each day the agency reported stocking it.
What kind of trout are stocked in Boysen Reservoir?: Rainbow trout (27 stockings, 1,006,628 fish); Kokanee salmon (8 stockings, 369,312 fish); Bear River cutthroat trout (6 stockings, 117,220 fish); Snake River cutthroat trout (1 stocking, 2,500 fish); Yellowstone cutthroat trout (1 stocking, 19,240 fish).

Stocking data from the Wyoming Game and Fish Department's fish stocking report, which records stockings by month with species, number and average length.