Porcupine Reservoir fishing
Porcupine Reservoir was last stocked on Oct. 28, 2026 with 2,072 lake trout (5.9 in. average), according to the Utah DWR fish stocking report. It is a reservoir in Cache County, Utah. From 2021 to 2026, DWR stocked 57,270 fish here, the 3rd most of 13 stocked waters in Cache County.
Recent stockings at Porcupine Reservoir
- Oct. 28, 20262,072 lake trout, 5.9 in. average
- June 24, 20267,564 lake trout and 1,763 splake, 3.8 in. average
- May 21, 20261,862 rainbow trout, 11.0 in. average
- May 19, 20262,772 rainbow trout, 11.8 in. average
- May 18, 20262,825 rainbow trout, 11.7 in. average
- Aug. 18, 20251,764 splake, 3.7 in. average
Newest first, from the Utah DWR stocking report. Full stocking history.
Porcupine Reservoir facts
- Last stocked
- Oct. 28, 2026 (13 days ago): 2,072 lake trout
- Stockings in 2026
- 9 (18,858 fish): 9,636 lake trout, 7,459 rainbow trout and 1,763 splake
- County
- Cache County
- Size
- 190 surface acres
- Stocked since 2021
- rainbow trout, lake trout, splake and tiger trout
- Likely catch (DWR)
- kokanee salmon and rainbow trout
- Average size stocked
- 7.9 in. (2021 to 2026)
- County rank
- 3rd most fish of 13 stocked waters in Cache County since 2021
- Name in DWR report
- PORCUPINE RES
- Nearest water
- Blacksmith Fork River, 7.9 mi
- Rules
- Water-specific rules in the 2026 guidebook
Latest fishing report
Fall outlook: cooling water makes rainbow trout more active, and they often sit nearer the bank and closer to the surface. From shore, try a worm or dough bait along the bottom close to points and spots where the shore drops into deeper water, or cast spoons and inline spinners; mornings and evenings can be especially good for working the shallows. Boaters can try trolling crankbaits that dive to shallow or medium depths, spoons, pop gear with a worm, or a dodger paired with a squid. Fall can be excellent for browns, splake and cutthroat too, since cooling water brings them nearer the bank and makes them more active, and browns can get especially aggressive as spawning nears. Try sinking flies, streamers, crankbaits, spoons, jigs or inline spinners cast along rocky banks, points and other spots beside deeper water; boaters can troll spoons, a dodger with a squid, or crankbaits that dive to medium depths along points, steep banks and other breaks.
Keeping kokanee is prohibited statewide, starting Sept. 10 and running through Nov. 30; release any you catch immediately.
Our summary of the Utah DWR fishing report dated Sept. 17, 2026, in our own words. Read the original on DWR Fish Utah.
Porcupine Reservoir stocking report, last 12 months
| Oct. 28, 2026 | Lake trout | 2,072 | 5.9 in. |
| June 24, 2026 | Lake trout | 7,564 | 4.1 in. |
| June 24, 2026 | Splake | 1,763 | 2.7 in. |
| May 21, 2026 | Rainbow trout | 931 | 11.0 in. |
| May 21, 2026 | Rainbow trout | 931 | 11.0 in. |
| May 19, 2026 | Rainbow trout | 1,386 | 11.8 in. |
| May 19, 2026 | Rainbow trout | 1,386 | 11.8 in. |
| May 18, 2026 | Rainbow trout | 1,120 | 11.6 in. |
| May 18, 2026 | Rainbow trout | 1,705 | 11.7 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.
Porcupine Reservoir stocking profile
- First record in the DWR report: May 8, 2002. Since then DWR has logged 79 stockings here in 24 different years, 497,774 fish in all.
- Species stocked 2021 to 2026, by share of fish: rainbow trout 50% (28,622 fish), lake trout 36% (20,768 fish), splake 9% (4,880 fish) and tiger trout 5% (3,000 fish).
- Busiest months in the record: May (52% of records) and April (14% of records).
- Stocked fish averaged 7.9 in. from 2021 to 2026 (per-record averages ranged from 2.7 to 12.6 in.).
- Fish stocked 2021 to 2026: 57,270, the 3rd most of 13 stocked waters in Cache County and 103rd of 1,076 statewide.
- Nearest other water with a page: Blacksmith Fork River, 7.9 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 Porcupine Reservoir stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 10 records, first on May 19, last on Aug. 18.
DWR does not publish stocking schedules. This is past stocking, not a promise. How we read patterns.
Porcupine Reservoir stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 9 | 18,858 | 7.1 in. | Lake trout, Splake, Rainbow trout |
| 2025 | 10 | 13,017 | 8.4 in. | Splake, Lake trout, Rainbow trout |
| 2024 | 5 | 13,395 | 7.2 in. | Rainbow trout, Lake trout |
| 2023 | 2 | 3,065 | 10.2 in. | Splake, Rainbow trout |
| 2022 | 1 | 2,586 | 11.4 in. | Rainbow trout |
| 2021 | 4 | 6,349 | 8.2 in. | Tiger trout, Splake, Rainbow trout |
| 2020 | 2 | 3,046 | 9.1 in. | Rainbow trout, Splake |
| 2019 | 1 | 735 | 11.9 in. | Rainbow trout |
| 2018 | 4 | 24,480 | 4.8 in. | Splake, Rainbow trout |
| 2017 | 2 | 21,902 | 3.1 in. | Splake, Rainbow trout |
| 2016 | 3 | 23,529 | 2.8 in. | Splake, Brook trout, Rainbow trout |
| 2015 | 4 | 23,049 | 5.5 in. | Splake, Rainbow trout |
| 2014 | 1 | 22,016 | 3.4 in. | Rainbow trout |
| 2012 | 1 | 22,003 | 3.4 in. | Rainbow trout |
| 2011 | 2 | 21,068 | 4.9 in. | Rainbow trout |
| 2010 | 1 | 19,999 | 3.0 in. | Rainbow trout |
| 2009 | 2 | 18,692 | 4.0 in. | Rainbow trout |
| 2008 | 3 | 19,996 | 5.3 in. | Rainbow trout |
| 2007 | 9 | 67,545 | 4.0 in. | Rainbow trout, Kokanee salmon |
| 2006 | 4 | 60,383 | 3.4 in. | Rainbow trout, Kokanee salmon |
| 2005 | 3 | 30,130 | 3.7 in. | Rainbow trout, Kokanee salmon |
| 2004 | 3 | 22,193 | 4.2 in. | Rainbow trout |
| 2003 | 1 | 19,977 | 3.5 in. | Rainbow trout |
| 2002 | 2 | 19,761 | 3.2 in. | Rainbow trout |
All stocking records 2021 to Nov. 10, 2025 (22)
| Aug. 18, 2025 | Splake | 1,764 | 3.7 in. |
| June 1, 2025 | Lake trout | 3,753 | 3.7 in. |
| May 20, 2025 | Rainbow trout | 1,200 | 11.9 in. |
| May 20, 2025 | Rainbow trout | 450 | 11.9 in. |
| May 20, 2025 | Rainbow trout | 450 | 11.9 in. |
| May 20, 2025 | Rainbow trout | 1,200 | 11.9 in. |
| May 19, 2025 | Rainbow trout | 750 | 11.9 in. |
| May 19, 2025 | Rainbow trout | 1,350 | 11.9 in. |
| May 19, 2025 | Rainbow trout | 750 | 11.9 in. |
| May 19, 2025 | Rainbow trout | 1,350 | 11.9 in. |
| May 15, 2024 | Rainbow trout | 1,232 | 12.1 in. |
| May 14, 2024 | Lake trout | 7,379 | 3.2 in. |
| May 9, 2024 | Rainbow trout | 2,345 | 12.1 in. |
| May 8, 2024 | Rainbow trout | 1,764 | 12.1 in. |
| May 8, 2024 | Rainbow trout | 675 | 12.6 in. |
| June 8, 2023 | Splake | 505 | 3.3 in. |
| May 24, 2023 | Rainbow trout | 2,560 | 11.6 in. |
| April 19, 2022 | Rainbow trout | 2,586 | 11.4 in. |
| Nov. 23, 2021 | Tiger trout | 1,500 | 6.6 in. |
| Nov. 23, 2021 | Tiger trout | 1,500 | 6.6 in. |
| July 13, 2021 | Splake | 848 | 3.5 in. |
| May 12, 2021 | Rainbow trout | 2,501 | 11.8 in. |
Fishing rules
- Limit: 12 trout and kokanee salmon, of which no more than 4 may be rainbow, cutthroat or brown trout combined; a full 12 requires at least 8 kokanee.
- Boats may not go faster than wakeless speed.
- Ice fishing: up to six lines allowed; anyone running more than two lines must put their name on each line, pole or tip-up and may tend only their own lines.
- See also the East Fork Little Bear River entries.
From the 2026 Utah Fishing Guidebook, in our own words. Rules can change mid-year: check wildlife.utah.gov/guidebooks before fishing. See statewide limits.
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Porcupine Reservoir questions
When is Porcupine Reservoir stocked?
DWR does not publish stocking schedules. Past records show Porcupine Reservoir was stocked in mid May (3 of the last 5 years). The most recent stocking in the DWR report is dated Oct. 28, 2026.
What fish are in Porcupine Reservoir?
DWR lists kokanee salmon and rainbow trout as likely catches and lake trout as possible. Since 2021 DWR has stocked rainbow trout, lake trout, splake and tiger trout.
Are there special fishing rules at Porcupine Reservoir?
Yes. The 2026 Utah Fishing Guidebook lists rules for this water, summarized on this page. Check the guidebook and DWR updates before fishing.
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.