Blanding Reservoir No 4 Fish Stocking
SAN JUAN County, Utah · 1980–2026 on record
According to Utah DWR — Fish Stocking Report, Blanding Reservoir No 4 was last stocked May 27, 2026 with Rainbow Trout. Blanding Reservoir No 4 has 230 stocking records on file, spanning 1980–2026, with about 470,405 fish stocked over that period.
When Blanding Reservoir No 4 is stocked
Blanding Reservoir No 4 is typically stocked in spring and summer, most often in May — 59 stocking events in that peak month.
By species
Angler's Field Guide
Fishing Tips & Stocking Guide for Blanding Reservoir No 4
Practical advice on fish behavior, recommended tackle, and state regulations for anglers fishing in SAN JUAN County, Utah.
Post-Plant Behavior & Timing
Hatchery-raised fish are conditioned to pelleted feed and open raceways. Following a release into Blanding Reservoir No 4, 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 Blanding Reservoir No 4 was last stocked May 27, 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 Blanding Reservoir No 4:
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.
Tiger Trout Profile Tips
Known for hitting lures and flies aggressively; a favorite for anglers seeking a distinctive, hard-fighting stocked trout.
Recommended Tackle for Blanding Reservoir No 4
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 Blanding Reservoir No 4, freshest activity first.
Medicine Lake
53 miSAN JUAN County · 2 species · 73 records
Last stocked July 2026
Dark Canyon Lake
57 miSAN JUAN County · 4 species · 156 records
Last stocked July 2026
Oowah Lake
59 miGRAND County · 2 species · 131 records
Last stocked July 2026
Warner Lake
60 miGRAND County · 1 species · 102 records
Last stocked July 2026
Blanding Reservoir No 3
1 miSAN JUAN County · 2 species · 155 records
Last stocked May 2026
Monticello Lake
16 miSAN JUAN County · 3 species · 208 records
Last stocked April 2026
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| May 27, 2026 | Rainbow Trout | 1,456 | 10.12" | Utah DWR |
| May 18, 2026 | Rainbow Trout | 1,820 | 10.12" | Utah DWR |
| April 7, 2026 | Rainbow Trout | 1,680 | 10.94" | Utah DWR |
| October 15, 2025 | Rainbow Trout | 1,540 | 10.16" | Utah DWR |
| August 27, 2025 | Rainbow Trout | 2,009 | 9.32" | Utah DWR |
| July 17, 2025 | Tiger Trout | 4,524 | 3.03" | Utah DWR |
| May 19, 2025 | Rainbow Trout | 1,260 | 10.21" | Utah DWR |
| April 14, 2025 | Rainbow Trout | 1,742 | 9.81" | Utah DWR |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| March 24, 2025 | Rainbow Trout | 1,759 | 10.31" | Utah DWR |
| August 28, 2023 | Rainbow Trout | 1,998 | 9.75" | Utah DWR |
| June 27, 2023 | Tiger Trout | 4,499 | 2.46" | Utah DWR |
| April 24, 2023 | Rainbow Trout | 1,752 | 9.9" | Utah DWR |
| April 17, 2023 | Rainbow Trout | 1,776 | 9.9" | Utah DWR |
| August 30, 2022 | Rainbow Trout | 2,004 | 9.38" | Utah DWR |
| July 12, 2022 | Tiger Trout | 4,501 | 2.83" | Utah DWR |
| March 14, 2022 | Rainbow Trout | 3,528 | 9.93" | Utah DWR |
| August 24, 2021 | Rainbow Trout | 2,526 | 10.69" | Utah DWR |
| June 30, 2021 | Tiger Trout | 4,502 | 2.91" | Utah DWR |
| April 26, 2021 | Rainbow Trout | 1,502 | 10.5" | Utah DWR |
| March 24, 2021 | Rainbow Trout | 2,000 | 9.91" | Utah DWR |
| August 25, 2020 | Rainbow Trout | 2,002 | 10.37" | Utah DWR |
| June 24, 2020 | Tiger Trout | 4,529 | 2.81" | Utah DWR |
| April 27, 2020 | Rainbow Trout | 1,711 | 10.19" | Utah DWR |
| March 23, 2020 | Rainbow Trout | 1,808 | 10.12" | Utah DWR |
| August 27, 2019 | Rainbow Trout | 997 | 9.49" | Utah DWR |
| August 27, 2019 | Rainbow Trout | 1,007 | 9.63" | Utah DWR |
| August 26, 2019 | Rainbow Trout | 781 | 10.96" | Utah DWR |
| August 8, 2019 | Tiger Trout | 5,510 | 3.34" | Utah DWR |
| April 23, 2019 | Rainbow Trout | 1,752 | 10.13" | Utah DWR |
| April 10, 2019 | Rainbow Trout | 1,755 | 10.35" | Utah DWR |
| September 19, 2018 | Rainbow Trout | 754 | 10.43" | Utah DWR |
| September 18, 2018 | Rainbow Trout | 1,256 | 10.43" | Utah DWR |
| August 9, 2018 | Rainbow Trout | 1,288 | 9.41" | Utah DWR |
| July 12, 2018 | Tiger Trout | 4,531 | 2.98" | Utah DWR |
| May 15, 2018 | Rainbow Trout | 1,242 | 9.82" | Utah DWR |
| April 2, 2018 | Rainbow Trout | 2,257 | 10.27" | Utah DWR |
| September 21, 2017 | Rainbow Trout | 2,010 | 9.6" | Utah DWR |
| May 17, 2017 | Tiger Trout | 4,550 | 3.55" | Utah DWR |
| May 17, 2017 | Rainbow Trout | 955 | 9.54" | Utah DWR |
| March 20, 2017 | Rainbow Trout | 2,538 | 9.64" | Utah DWR |
| September 27, 2016 | Rainbow Trout | 1,997 | 10.08" | Utah DWR |
| August 22, 2016 | Tiger Trout | 4,500 | 5.1" | Utah DWR |
| May 16, 2016 | Rainbow Trout | 1,411 | 9.05" | Utah DWR |
| March 29, 2016 | Rainbow Trout | 2,090 | 8.19" | Utah DWR |
| September 16, 2015 | Rainbow Trout | 2,075 | 8.22" | Utah DWR |
| September 3, 2015 | Tiger Trout | 4,500 | 5.29" | Utah DWR |
| April 6, 2015 | Rainbow Trout | 3,499 | 7.95" | Utah DWR |
| September 18, 2014 | Rainbow Trout | 2,064 | 8.67" | Utah DWR |
| August 21, 2014 | Tiger Trout | 4,560 | 5.46" | Utah DWR |
| June 24, 2014 | Rainbow Trout | 503 | 8.6" | Utah DWR |
Showing 50 of 230 stocking records.
Frequently asked
When was Blanding Reservoir No 4 last stocked?
According to Utah DWR — Fish Stocking Report, Blanding Reservoir No 4 was last stocked May 27, 2026 with Rainbow Trout.
What fish species are stocked in Blanding Reservoir No 4?
Blanding Reservoir No 4 is stocked with Rainbow Trout and Tiger Trout.
What time of year is Blanding Reservoir No 4 stocked?
Blanding Reservoir No 4 is typically stocked in spring and summer, most often in May.
How often is Blanding Reservoir No 4 stocked?
Blanding Reservoir No 4 has been stocked about 5 times a year — 230 recorded stockings between 1980 and 2026.
How many fish have been stocked in Blanding Reservoir No 4?
About 470,405 fish have been stocked in Blanding Reservoir No 4 across 230 recorded events since 1980, per Utah fish & wildlife agency.
What size are the fish stocked in Blanding Reservoir No 4?
Fish stocked in Blanding Reservoir No 4 average about 9.0 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Blanding Reservoir No 4?
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 Blanding Reservoir No 4?
Freshly stocked trout in Blanding Reservoir No 4 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.