Koosharem Reservoir fishing

Koosharem Reservoir was last stocked on Oct. 1, 2026 with 8,570 rainbow trout and 2,021 brown trout (3.5 in. average), according to the Utah DWR fish stocking report. It is a reservoir in Sevier County, Utah. From 2021 to 2026, DWR stocked 110,608 fish here, the 3rd most of 39 stocked waters in Sevier County.

Sevier County

Stocking data fetched Nov. 10, 2026.

Last stockedOct. 1, 202640 days ago, brown trout

Fish stocked in 202616,5934 records

Records since 202145History back to 2002

Stocked species7rainbow trout, cutthroat trout and tiger trout

Recent stockings at Koosharem Reservoir

Oct. 1, 20268,570 rainbow trout and 2,021 brown trout, 3.5 in. average
March 3, 20266,002 rainbow trout, 9.3 in. average
Nov. 5, 20251,947 rainbow trout, 10.4 in. average
Oct. 21, 20253,009 rainbow trout, 7.8 in. average
Oct. 20, 20256,000 rainbow trout, 1,980 tiger trout and 835 brook trout, 5.8 in. average
June 9, 20252,002 splake, 3.5 in. average

Newest first, from the Utah DWR stocking report. Full stocking history.

Koosharem Reservoir facts

Last stocked: Oct. 1, 2026 (40 days ago): 8,570 rainbow trout and 2,021 brown trout
Stockings in 2026: 4 (16,593 fish): 14,572 rainbow trout and 2,021 brown trout
County: Sevier County
Stocked since 2021: rainbow trout, cutthroat trout, tiger trout, brook trout, splake, brown trout and tiger muskie
Likely catch (DWR): cutthroat trout and rainbow trout
Average size stocked: 7.3 in. (2021 to 2026)
County rank: 3rd most fish of 39 stocked waters in Sevier County since 2021
Name in DWR report: KOOSHAREM RES
Nearest water: Big Lake (Sevier County), 7.3 mi
Rules: Statewide rules (no water-specific entry in the 2026 guidebook)

Koosharem Reservoir stocking report, last 12 months

Koosharem Reservoir: DWR stocking records since Nov. 10, 2025, newest first.

Oct. 1, 2026	Brown trout	2,021	3.8 in.
Oct. 1, 2026	Rainbow trout	8,570	3.5 in.
March 3, 2026	Rainbow trout	3,001	9.3 in.
March 3, 2026	Rainbow trout	3,001	9.3 in.

Source: Utah DWR fish stocking report. Stocking data fetched Nov. 10, 2026; newest record dated Nov. 19, 2026. DWR posts stockings after they happen and does not publish schedules.

Koosharem Reservoir stocking profile

First record in the DWR report: Oct. 28, 2002. Since then DWR has logged 166 stockings here in 25 different years, 706,062 fish in all.
Species stocked 2021 to 2026, by share of fish: rainbow trout 51% (56,922 fish), cutthroat trout 24% (26,975 fish), brook trout 8% (8,890 fish), tiger trout 8% (8,791 fish), splake 5% (6,009 fish), brown trout 2% (2,021 fish) and tiger muskie 1% (1,000 fish).
Busiest months in the record: April (35% of records) and March (16% of records).
Stocked fish averaged 7.3 in. from 2021 to 2026 (per-record averages ranged from 1.1 to 15.4 in.). The yearly average was 8.9 in. in 2021 and 7.5 in. in 2025.
Fish stocked 2021 to 2026: 110,608, the 3rd most of 39 stocked waters in Sevier County and 57th of 1,076 statewide.
Nearest other water with a page: Big Lake (Sevier County), 7.3 mi away.

Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.

When is Koosharem Reservoir stocked?

Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.

late Marchstocked in 3 of the last 5 years, mostly cutthroat trout and rainbow trout.

early to mid Aprilstocked in 4 of the last 5 years, mostly rainbow trout and cutthroat trout.

early Maystocked in 3 of the last 5 years, mostly rainbow trout.

mid to late Octoberstocked in 3 of the last 5 years, mostly tiger trout and rainbow trout.

2025 stocking: 10 records, first on March 27, last on Nov. 5.

Years with a stocking in each third of the month, 2021 to 2025:012345

DWR does not publish stocking schedules. This is past stocking, not a promise. How we read patterns.

Koosharem Reservoir stocking history by year

Koosharem Reservoir: DWR stocking records per year. Fish counts are totals of all records that year; average length is weighted by the number of fish.
Year	Records	Fish	Avg. length	Species
2026	4	16,593	5.6 in.	Brown trout, Rainbow trout
2025	10	26,856	7.5 in.	Rainbow trout, Brook trout, Tiger trout, Splake, Cutthroat trout
2024	7	18,368	7.0 in.	Tiger trout, Splake, Rainbow trout, Cutthroat trout
2023	9	24,144	6.6 in.	Tiger trout, Brook trout, Splake, Rainbow trout, Cutthroat trout
2022	5	11,100	9.1 in.	Rainbow trout, Cutthroat trout
2021	10	13,547	8.9 in.	Rainbow trout, Tiger muskie, Cutthroat trout
2020	11	39,461	6.0 in.	Tiger trout, Splake, Tiger muskie, Rainbow trout, Cutthroat trout
2019	7	66,642	4.6 in.	Tiger trout, Cutthroat trout, Rainbow trout
2018	7	40,079	4.5 in.	Splake, Tiger trout, Rainbow trout, Cutthroat trout
2017	8	36,141	6.0 in.	Cutthroat trout, Splake, Tiger trout, Brook trout, Rainbow trout
2016	6	18,638	7.8 in.	Tiger trout, Splake, Rainbow trout, Cutthroat trout
2015	6	28,451	5.9 in.	Tiger trout, Splake, Cutthroat trout, Rainbow trout
2014	4	9,011	6.4 in.	Tiger trout, Splake, Rainbow trout
2013	5	16,212	8.0 in.	Splake, Cutthroat trout, Rainbow trout
2012	9	23,815	8.2 in.	Tiger trout, Rainbow trout, Cutthroat trout
2011	4	14,003	8.3 in.	Rainbow trout, Cutthroat trout
2010	4	22,740	5.4 in.	Cutthroat trout, Tiger trout, Rainbow trout
2009	3	12,016	4.9 in.	Tiger trout, Rainbow trout
2008	4	29,805	5.0 in.	Cutthroat trout, Tiger trout, Rainbow trout
2007	4	30,635	5.0 in.	Cutthroat trout, Tiger trout, Rainbow trout
2006	8	42,042	5.6 in.	Cutthroat trout, Tiger trout, Rainbow trout
2005	7	29,012	6.1 in.	Tiger trout, Rainbow trout, Cutthroat trout
2004	10	55,059	5.1 in.	Cutthroat trout, Tiger trout, Rainbow trout
2003	9	42,993	5.5 in.	Rainbow trout, Cutthroat trout
2002	5	38,699	5.1 in.	Rainbow trout, Cutthroat trout

All stocking records 2021 to Nov. 10, 2025 (41)

Koosharem Reservoir: DWR stocking records 2021 to Nov. 10, 2025.

Nov. 5, 2025	Rainbow trout	1,947	10.4 in.
Oct. 21, 2025	Rainbow trout	3,009	7.8 in.
Oct. 20, 2025	Brook trout	835	13.3 in.
Oct. 20, 2025	Rainbow trout	6,000	4.9 in.
Oct. 20, 2025	Tiger trout	1,980	5.5 in.
June 9, 2025	Splake	2,002	3.5 in.
April 9, 2025	Rainbow trout	1,515	9.6 in.
April 2, 2025	Rainbow trout	2,240	9.6 in.
April 2, 2025	Rainbow trout	2,240	9.6 in.
March 27, 2025	Cutthroat trout	5,088	8.1 in.
Oct. 28, 2024	Tiger trout	2,050	5.6 in.
July 11, 2024	Tiger trout	2,760	3.3 in.
July 8, 2024	Splake	2,000	2.7 in.
May 15, 2024	Rainbow trout	1,679	9.6 in.
May 7, 2024	Rainbow trout	2,162	9.6 in.
May 7, 2024	Rainbow trout	2,162	9.6 in.
March 18, 2024	Cutthroat trout	5,555	8.2 in.
Oct. 16, 2023	Tiger trout	2,001	5.9 in.
Aug. 17, 2023	Brook trout	5,384	3.3 in.
Aug. 17, 2023	Brook trout	2,671	3.1 in.
July 5, 2023	Splake	2,007	3.6 in.
May 10, 2023	Rainbow trout	2,003	9.5 in.
May 3, 2023	Rainbow trout	2,198	9.5 in.
April 26, 2023	Rainbow trout	1,800	9.4 in.
April 13, 2023	Cutthroat trout	1,900	9.4 in.
April 13, 2023	Cutthroat trout	4,180	9.4 in.
April 5, 2022	Rainbow trout	1,050	10.0 in.
April 5, 2022	Rainbow trout	1,050	10.0 in.
April 1, 2022	Rainbow trout	1,950	9.9 in.
April 1, 2022	Rainbow trout	1,950	9.9 in.
March 28, 2022	Cutthroat trout	5,100	8.2 in.
May 4, 2021	Rainbow trout	724	9.4 in.
May 4, 2021	Rainbow trout	724	9.4 in.
May 4, 2021	Rainbow trout	724	9.4 in.
May 4, 2021	Rainbow trout	724	9.4 in.
May 4, 2021	Rainbow trout	724	9.4 in.
April 20, 2021	Rainbow trout	2,376	9.4 in.
April 20, 2021	Tiger muskie	1,000	1.1 in.
March 29, 2021	Cutthroat trout	5,152	8.1 in.
March 25, 2021	Rainbow trout	695	15.4 in.
March 25, 2021	Rainbow trout	704	15.4 in.

Fishing rules

No water-specific entry for Koosharem Reservoir in the 2026 guidebook: statewide limits apply unless a group entry (such as a drainage) covers it.

From the 2026 Utah Fishing Guidebook, in our own words. Rules can change mid-year: check wildlife.utah.gov/guidebooks before fishing.

Access and facilities

Boating: Hand launch
Camping: Primitive tent camping
Facilities: Restrooms
Other activities: Wildlife watching

Facility list from DWR Fish Utah. Check with the land manager before you go; facilities close seasonally.

Email alerts

Email me when Koosharem Reservoir is stocked

Email me when Koosharem Reservoir shows up in the DWR stocking report. You confirm by email first and can unsubscribe in one click.

"Often stocked around now" heads-ups come from past records only, never a promise. We use your email only for these alerts. Privacy.

Koosharem Reservoir questions

When is Koosharem Reservoir stocked?

DWR does not publish stocking schedules. Past records show Koosharem Reservoir was stocked in late March (3 of the last 5 years), early to mid April (4 of the last 5 years), early May (3 of the last 5 years) and mid to late October (3 of the last 5 years). The most recent stocking in the DWR report is dated Oct. 1, 2026.

What fish are in Koosharem Reservoir?

DWR lists cutthroat trout and rainbow trout as likely catches and brook trout, splake and tiger trout as possible. Since 2021 DWR has stocked rainbow trout, cutthroat trout, tiger trout, brook trout, splake, brown trout and tiger muskie.

Sources

Stocking: Utah DWR fish stocking report, fetched Nov. 10, 2026. Size, program, species and facilities: DWR Fish Utah. Location: Utah DWR, USGS NHD. Rules: 2026 Utah Fishing Guidebook. Page built Nov. 10, 2026. Found an error? Tell us. Verify rules with DWR before fishing.