Rainbow Trout Stocked · 8 plants · last 2025 Best: dawn, dusk Grindstone fishing
Grindstone fishing is stocked with Brown Trout, Rainbow Trout, Brook Trout, Lake Trout, and Splake on a natural lake. Also recorded: Smallmouth Bass and Northern Pike. It is stocked about 5.8 times a year since 2022. Species guides list dawn, day, and dusk for Brown Trout, Brook Trout, and Northern Pike, dawn and dusk for Rainbow Trout and Smallmouth Bass, and dawn for Lake Trout.
- Last stocked
- 2025
- Rainbow Trout
- Plants on record
- 23
- Since 2022
- Species stocked
- 5 (+2 also recorded)
Fish at Grindstone
Rainbow Trout Stocked · 8 plants · last 2025 Best: dawn, dusk 
Brown Trout Stocked · 6 plants · last 2025 Best: dawn, day, dusk 
Brook Trout Stocked · 4 plants · last 2025 Best: dawn, day, dusk 
Lake Trout Stocked · 4 plants · last 2025 Best: dawn 
Splake Stocked · 1 plant · last 2024 Last stocked 2024 · 1 plant
Splake species guide
Smallmouth Bass Confirmed present Best: dawn, dusk Best: dawn, dusk
Smallmouth Bass species guide
Northern Pike Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Northern Pike species guideHow Grindstone is stocked
Fish stocked in 2022
14,547
Fish stocked in 2023
17,827
Fish stocked in 2024
22,266
Fish stocked in 2025
22,869
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| 2025 | Rainbow Trout | 9,000 | – | report |
| 2025 | Rainbow Trout | 702 | – | report |
| 2025 | Lake Trout | 5,250 | – | report |
| 2025 | Lake Trout | 4,369 | – | report |
| 2025 | Brown Trout | 350 | – | report |
| 2025 | Brown Trout | 2,150 | – | report |
| 2025 | Brook Trout | 71 | – | report |
| 2025 | Brook Trout | 977 | – | report |
| 2024 | Splake | 10,454 | – | report |
| 2024 | Rainbow Trout | 9,000 | – | report |
| 2024 | Rainbow Trout | 112 | – | report |
| 2024 | Brown Trout | 2,500 | – | report |
| 2024 | Brook Trout | 200 | – | report |
| 2023 | Rainbow Trout | 9,000 | – | report |
| 2023 | Rainbow Trout | 30 | – | report |
| 2023 | Lake Trout | 6,000 | – | report |
| 2023 | Lake Trout | 87 | – | report |
| 2023 | Brown Trout | 953 | – | report |
| 2023 | Brown Trout | 1,637 | – | report |
| 2023 | Brook Trout | 120 | – | report |
| 2022 | Rainbow Trout | 12,000 | – | report |
| 2022 | Rainbow Trout | 47 | – | report |
| 2022 | Brown Trout | 2,500 | – | report |
Access and facts
- Water type
- natural lake
- Nearest town
- Sandstone, MN
MN DNR LakeFinder lists an open DNR concrete/boat access on the northwest side of Grindstone Lake (DOW 58012300). Nearest town on the DNR record is Sandstone.
Drafted by AI from the cited sources and checked before publishing.
Advisories, closures, regulations and water conditions change. Check the Minnesota Department of Natural Resources before you go.
Nearest lakes
Common questions
What fish are at Grindstone?
Fishing Grindstone usually means Rainbow Trout: Rainbow Trout accounts for 8 of 23 plants on record, ahead of Brown Trout and 3 more. Rainbow Trout was last stocked 2025. Brown Trout was last stocked 2025. Brook Trout was last stocked 2025. Lake Trout was last stocked 2025. 1 more species is on the stocking report. Smallmouth Bass and Northern Pike are recorded here outside the stocking reports.
When is Grindstone stocked?
Last stocked 2025. It is stocked about 5.8 times a year since 2022.
How do you get on Grindstone?
The nearest town is Sandstone, MN. MN DNR LakeFinder lists an open DNR concrete/boat access on the northwest side of Grindstone Lake (DOW 58012300). Nearest town on the DNR record is Sandstone.