Fishing at Grindstone, Minnesota
533-acre lake · Pine County · 4 species stocked
Stretching across 533 acres in Pine County, Grindstone is a lake known to anglers throughout Minnesota for its mixed warmwater and coldwater fishery. Whether you're casting from a kayak or running deeper structure from a boat, the data on this page will help you plan your next trip.
Recent Stocking Reports
The most recent 10 stocking events on record for Grindstone:
| Date | Species | Quantity | Avg size |
|---|---|---|---|
| Jan 1, 2024 | 🐟 Splake | 10,454 | 0.0″ |
| Jan 1, 2024 | 🐟 Rainbow Trout | 9,000 | 0.0″ |
| Jan 1, 2024 | 🐟 Rainbow Trout | 112 | 0.0″ |
| Jan 1, 2024 | 🐟 Brown Trout | 2,500 | 0.0″ |
| Jan 1, 2023 | 🐟 Brown Trout | 953 | 0.0″ |
| Jan 1, 2023 | 🐟 Brown Trout | 1,637 | 0.0″ |
| Jan 1, 2023 | 🐟 Lake Trout | 6,000 | 0.0″ |
| Jan 1, 2023 | 🐟 Lake Trout | 87 | 0.0″ |
| Jan 1, 2023 | 🐟 Rainbow Trout | 30 | 0.0″ |
| Jan 1, 2023 | 🐟 Rainbow Trout | 9,000 | 0.0″ |
Species You Can Catch
Where to Catch Splake in Minnesota
If you're targeting one of the species stocked in Grindstone, the state-level guide ranks the top lakes by stocking volume — a good supplement to this page when planning a trip:
- Top Splake lakes in Minnesota
- Top Rainbow Trout lakes in Minnesota
- Top Brown Trout lakes in Minnesota
- Top Lake Trout lakes in Minnesota
Best Time to Fish Grindstone
For splake, the best fishing on Grindstone is typically in spring and fall, when surface temperatures fall in the 55–70°F range. That window matches the active feeding period for the species and aligns with lake thermal turnover, putting fish in predictable depths and structure. Check the recent stocking dates above — fish are easiest to locate in the first two to four weeks after a planting.
Nearby Lakes
Other stocked waters within ~75 miles of Grindstone:
- Grindstone Lake — 0.0 mi (525 ac)
- Bass — 3.1 mi (228 ac)
- Grass — 3.5 mi (125 ac)
- Lake Eleven — 3.8 mi (307 ac)
- Eleven — 3.9 mi (315 ac)
- Upper Pine — 4.6 mi (233 ac)
- Upper Pine Lake — 4.7 mi (234 ac)
- Pine — 5.5 mi (378 ac)
Fishing Regulations
A valid Minnesota fishing license is required at Grindstone. Buy one online and check current regulations at the Minnesota DNR. Always confirm seasonal closures, size limits, and creel limits before fishing.
Frequently Asked Questions
What fish are stocked in Grindstone?
Grindstone has been stocked with Splake, Rainbow Trout, Brown Trout, Lake Trout.
When was Grindstone last stocked?
The most recent stocking on record was Jan 1, 2024, when 10,454 splake were planted.
Do I need a fishing license for Grindstone?
Yes — a valid Minnesota fishing license is required. Purchase one online from the Minnesota DNR.