Rainbow Trout Stocked · 7 plants · last 2025 Best: dawn, dusk Portsmouth Mine fishing
Portsmouth Mine fishing has Rainbow Trout on the stocking report. Also recorded: Black Crappie, Bluegill, Hybrid Sunfish, Largemouth Bass, Northern Pike, Pumpkinseed, and 3 more. It is stocked about 1.8 times a year since 2022. Species guides list dawn and dusk for Rainbow Trout and Largemouth Bass, dawn, dusk, and night for Black Crappie and Rock Bass, and dawn, day, and dusk for Bluegill, Northern Pike, and Yellow Perch.
- Last stocked
- 2025
- Rainbow Trout
- Plants on record
- 7
- Since 2022
- Species stocked
- 1 (+9 also recorded)
Fish at Portsmouth Mine
Rainbow Trout Stocked · 7 plants · last 2025 Best: dawn, dusk 
Black Crappie Confirmed present Best: dawn, dusk, night Best: dawn, dusk, night
Black Crappie species guide
Bluegill Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Bluegill species guide
Hybrid Sunfish Confirmed present 
Largemouth Bass Confirmed present Best: dawn, dusk Best: dawn, dusk
Largemouth Bass species guide
Northern Pike Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Northern Pike species guide
Pumpkinseed Confirmed present Best: dusk Best: dusk
Pumpkinseed species guide
Rock Bass Confirmed present Best: dawn, dusk, night Best: dawn, dusk, night
Rock Bass species guide Yellow Bullhead Confirmed present
Yellow Perch Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Yellow Perch species guideHow Portsmouth Mine is stocked
Fish stocked in 2022
7,036
Fish stocked in 2023
7,092
Fish stocked in 2024
7,000
Fish stocked in 2025
7,566
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| 2025 | Rainbow Trout | 66 | – | report |
| 2025 | Rainbow Trout | 7,500 | – | report |
| 2024 | Rainbow Trout | 7,000 | – | report |
| 2023 | Rainbow Trout | 7,000 | – | report |
| 2023 | Rainbow Trout | 92 | – | report |
| 2022 | Rainbow Trout | 36 | – | report |
| 2022 | Rainbow Trout | 7,000 | – | report |
Access and facts
- Nearest town
- Armour Number Two Mine, MN
Advisories, closures, regulations and water conditions change. Check the Minnesota Department of Natural Resources before you go.
Nearest lakes
Public land at Portsmouth Mine
Portsmouth Mine is inside Cuyuna Country State Recreation Area.
Boundaries from Public Lands DB, part of the same network.
Common questions
What fish are at Portsmouth Mine?
Fishing Portsmouth Mine usually means Rainbow Trout. All 7 plants on record are Rainbow Trout. Rainbow Trout was last stocked 2025. Black Crappie, Bluegill, Hybrid Sunfish, and Largemouth Bass, plus 5 more are recorded here outside the stocking reports.
When is Portsmouth Mine stocked?
Last stocked 2025. It is stocked about 1.8 times a year since 2022.