Grantsville Reservoir Fish Stocking
TOOELE County, Utah · 1985–2026 on record
According to Utah DWR — Fish Stocking Report, Grantsville Reservoir was last stocked June 23, 2026 with Rainbow Trout. Grantsville Reservoir has 478 stocking records on file, spanning 1985–2026, with about 802,071 fish stocked over that period.
When Grantsville Reservoir is stocked
Grantsville Reservoir is typically stocked in spring, most often in April — 112 stocking events in that peak month.
By species
Angler's Field Guide
Fishing Tips & Stocking Guide for Grantsville Reservoir
Practical advice on fish behavior, recommended tackle, and state regulations for anglers fishing in TOOELE County, Utah.
Post-Plant Behavior & Timing
Hatchery-raised fish are conditioned to pelleted feed and open raceways. Following a release into Grantsville Reservoir, they typically congregate in schools near public access points, boat ramps, or inlets for the first 24 to 48 hours while adjusting to natural water conditions.
Since Grantsville Reservoir was last stocked June 23, 2026, anglers visiting within 1 to 2 weeks of a reported event generally experience the highest activity before fish disperse into deeper cover.
State Regulations & Licensing
- •Fishing License: A valid Utah freshwater fishing license is required for anglers age 16 and older.Purchase Utah license online →
- •Official Rules & Limits: Bag limits, bait restrictions, and seasonal boundaries are set by Utah fish & wildlife agency.Official Utah regulations guidebook →
- •Ethical Conservation: Use barbless hooks and keep fish submerged in water during unhooking.Trout Thermal Advisory: When water temperatures rise above 68°F (20°C), released trout face severe mortality from thermal exhaustion. Target warmwater species or fish early in the morning when lakes and streams warm up.
Recommended Tackle & Presentations
Techniques tailored to the species stocked in Grantsville Reservoir:
Stocked Trout Tactics
Use light 4–6 lb monofilament or fluorocarbon line. Float scented dough bait (PowerBait) 12–18" off bottom using a sliding slip-sinker rig with a size 14–16 treble hook. For active casting, throw 1/16 to 1/8 oz inline spinners (Panther Martin, Rooster Tail) or small spoons (Kastmaster) along drop-offs.
Rainbow Trout Profile Tips
The most commonly targeted stocked trout in the country, taken on bait, spinners, and flies alike; a common first fish for new anglers.
Brown Trout Profile Tips
Known for being wary and selective, brown trout are a prized target for fly anglers, especially larger, nocturnal-feeding fish.
Recommended Tackle for Grantsville Reservoir
Field-tested tackle and presentations matched to the species stocked here.
Berkley PowerBait Floating Trout Dough
Hatchery-raised trout are conditioned to pelleted scents; scented dough floated 12–18 inches off bottom consistently triggers strikes.
Panther Martin Classic Teardrop Inline Spinner
The heavy convex blade spins instantly upon retrieval, sending vibration through the water that triggers aggressive reaction bites along drop-offs.
Sliding Sinker & Treble Hook Rigging Kit
Sliding egg sinkers allow cautious trout to run with bait without feeling line drag, while size 14–16 treble hooks keep dough bait securely pinned.
As an Amazon Associate, StockedWaters earns from qualifying purchases at no additional cost to you. Recommendations are chosen for hatchery-conditioned fish behavior and ethical rigging. We may receive a referral commission if you buy through these links. Read our editorial policy & standards.
Nearby stocked waters
Other stocked waters near Grantsville Reservoir, freshest activity first.
Rainbow Reservoir
18 miTOOELE County · 3 species · 148 records
Last stocked June 2026
Settlement Canyon Reservoir
11 miTOOELE County · 3 species · 614 records
Last stocked June 2026
Cove Pond
24 miSALT LAKE County · 7 species · 371 records
Last stocked June 2026
Riverton Pond
28 miSALT LAKE County · 5 species · 245 records
Last stocked June 2026
Riverfront Pond
31 miSALT LAKE County · 4 species · 88 records
Last stocked April 2026
South Willow Creek
1 miTOOELE County · 2 species · 96 records
Last stocked September 2025
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 23, 2026 | Rainbow Trout | 819 | 12.44" | Utah DWR |
| June 8, 2026 | Rainbow Trout | 2,380 | 12.13" | Utah DWR |
| May 26, 2026 | Rainbow Trout | 1,959 | 11.86" | Utah DWR |
| May 18, 2026 | Rainbow Trout | 2,304 | 12.02" | Utah DWR |
| May 11, 2026 | Rainbow Trout | 2,240 | 12.13" | Utah DWR |
| May 6, 2026 | Rainbow Trout | 690 | 12.74" | Utah DWR |
| May 6, 2026 | Rainbow Trout | 872 | 12.74" | Utah DWR |
| May 6, 2026 | Rainbow Trout | 114 | 14.56" | Utah DWR |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| May 5, 2026 | Rainbow Trout | 948 | 14.56" | Utah DWR |
| April 14, 2026 | Rainbow Trout | 2,007 | 11.24" | Utah DWR |
| March 16, 2026 | Rainbow Trout | 1,502 | 10.6" | Utah DWR |
| March 16, 2026 | Rainbow Trout | 1,502 | 10.6" | Utah DWR |
| October 28, 2025 | Rainbow Trout | 2,405 | 10.88" | Utah DWR |
| October 20, 2025 | Rainbow Trout | 2,432 | 12.47" | Utah DWR |
| September 24, 2025 | Rainbow Trout | 1,400 | 10.49" | Utah DWR |
| September 22, 2025 | Rainbow Trout | 400 | 13.58" | Utah DWR |
| September 22, 2025 | Rainbow Trout | 800 | 10.49" | Utah DWR |
| September 22, 2025 | Rainbow Trout | 800 | 13.58" | Utah DWR |
| September 17, 2025 | Rainbow Trout | 800 | 13.58" | Utah DWR |
| September 17, 2025 | Rainbow Trout | 800 | 13.58" | Utah DWR |
| July 14, 2025 | Rainbow Trout | 912 | 12.78" | Utah DWR |
| July 14, 2025 | Rainbow Trout | 912 | 12.78" | Utah DWR |
| July 10, 2025 | Rainbow Trout | 960 | 12.78" | Utah DWR |
| July 10, 2025 | Rainbow Trout | 960 | 12.78" | Utah DWR |
| July 10, 2025 | Rainbow Trout | 960 | 12.78" | Utah DWR |
| June 6, 2025 | Brown Trout | 2,890 | 3.14" | Utah DWR |
| May 15, 2025 | Rainbow Trout | 1,160 | 11.68" | Utah DWR |
| May 15, 2025 | Rainbow Trout | 1,160 | 11.68" | Utah DWR |
| April 21, 2025 | Rainbow Trout | 1,350 | 11.9" | Utah DWR |
| April 21, 2025 | Rainbow Trout | 1,350 | 11.9" | Utah DWR |
| March 12, 2025 | Rainbow Trout | 455 | 10.11" | Utah DWR |
| March 4, 2025 | Rainbow Trout | 1,200 | 5.61" | Utah DWR |
| March 4, 2025 | Rainbow Trout | 1,200 | 5.61" | Utah DWR |
| March 3, 2025 | Rainbow Trout | 1,200 | 5.61" | Utah DWR |
| March 3, 2025 | Rainbow Trout | 1,200 | 5.61" | Utah DWR |
| November 6, 2024 | Rainbow Trout | 1,200 | 11.86" | Utah DWR |
| November 6, 2024 | Rainbow Trout | 1,200 | 11.86" | Utah DWR |
| September 12, 2024 | Rainbow Trout | 1,038 | 12.6" | Utah DWR |
| September 12, 2024 | Rainbow Trout | 1,038 | 12.6" | Utah DWR |
| September 12, 2024 | Rainbow Trout | 1,038 | 12.6" | Utah DWR |
| September 11, 2024 | Rainbow Trout | 1,600 | 10.77" | Utah DWR |
| July 1, 2024 | Rainbow Trout | 1,250 | 11.37" | Utah DWR |
| July 1, 2024 | Rainbow Trout | 1,250 | 11.37" | Utah DWR |
| June 10, 2024 | Rainbow Trout | 1,260 | 11.16" | Utah DWR |
| June 10, 2024 | Rainbow Trout | 1,260 | 11.16" | Utah DWR |
| May 15, 2024 | Rainbow Trout | 1,254 | 10.96" | Utah DWR |
| May 15, 2024 | Rainbow Trout | 1,254 | 10.96" | Utah DWR |
| April 25, 2024 | Rainbow Trout | 1,248 | 10.14" | Utah DWR |
| April 24, 2024 | Rainbow Trout | 1,248 | 10.14" | Utah DWR |
| April 11, 2024 | Rainbow Trout | 1,254 | 10.44" | Utah DWR |
Showing 50 of 478 stocking records.
Frequently asked
When was Grantsville Reservoir last stocked?
According to Utah DWR — Fish Stocking Report, Grantsville Reservoir was last stocked June 23, 2026 with Rainbow Trout.
What fish species are stocked in Grantsville Reservoir?
Grantsville Reservoir is stocked with Rainbow Trout and Brown Trout.
What time of year is Grantsville Reservoir stocked?
Grantsville Reservoir is typically stocked in spring, most often in April.
How often is Grantsville Reservoir stocked?
Grantsville Reservoir has been stocked about 11 times a year — 478 recorded stockings between 1985 and 2026.
How many fish have been stocked in Grantsville Reservoir?
About 802,071 fish have been stocked in Grantsville Reservoir across 478 recorded events since 1985, per Utah fish & wildlife agency.
What size are the fish stocked in Grantsville Reservoir?
Fish stocked in Grantsville Reservoir average about 10.0 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Grantsville Reservoir?
Yes, all anglers age 16 and older generally need a valid Utah freshwater fishing license. Always review current regulations from Utah fish & wildlife agency for site-specific rules, bag limits, or stamps.
How do you catch stocked trout in Grantsville Reservoir?
Freshly stocked trout in Grantsville Reservoir typically respond well to floating dough bait (such as PowerBait) floated 12–18 inches off bottom on light 4–6 lb leader, live nightcrawlers under a bobber, and small inline spinners or spoons retrieved along shorelines and drop-offs.