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Fishing Grindstone River - Grindstone Reservoir: what the data says
26-acre reservoir near Pine County. The lake tops out around 11 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Below is the species-by-species picture, pulled from the same data the map uses.
Northern Pike fishing at Grindstone River - Grindstone Reservoir
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Summer pushes them deeper, 3 to 11 ft, and winter fish settle into 3 to 11 ft. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for northern pike in spring. In summer the feeding windows fall in early morning and the evening. Tie on a bucktail or a weedless spoon over cabbage and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | #5 inline spinner, Spoon (red/white) |
| Summer | 3 to 11 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 3 to 11 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 3 to 11 ft | midday | Tip-ups, Large jigging spoon |
Rock Bass fishing at Grindstone River - Grindstone Reservoir
In spring, rock bass run shallow here, mostly 2 to 10 ft. By summer they slide out to 3 to 11 ft, and by winter most fish are in 3 to 11 ft. The spot to know is Main-lake point, a point in about 8 ft of water that rates prime for rock bass in summer. Best bite is the evening. A ned rig (small) or a marabou jig covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | 1/16 oz jig + grub, Small inline spinner |
| Summer | 3 to 11 ft | dusk | Ned rig (small), Marabou jig |
| Fall | 3 to 11 ft | midday | Small tube jig, Inline spinner |
| Winter | 3 to 11 ft | midday | Tungsten jig + plastic, Small spoon + spike |
Crappie fishing at Grindstone River - Grindstone Reservoir
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. By summer they slide out to 3 to 11 ft, and by winter most fish are in 3 to 11 ft. If you only fish one area, make it Deep basin: a deep basin around 9 ft that scores prime in winter. In summer the feeding windows fall in early morning and the evening. Summer baits: a jig trolled/spider-rigged or a small crankbait (trolled) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 3 to 11 ft | dawn & dusk | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 3 to 11 ft | dawn | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 3 to 11 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Bluegill fishing at Grindstone River - Grindstone Reservoir
Spring bluegill on Grindstone River - Grindstone Reservoir hold shallow, usually 1 to 6 ft. Summer pushes them deeper, 3 to 11 ft, and winter fish settle into 3 to 11 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. Plan around early morning and the evening in the warm months. Tie on a small sponge spider (fly) or a micro tube jig and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 3 to 11 ft | dawn & dusk | Small sponge spider (fly), Micro tube jig |
| Fall | 3 to 11 ft | midday | Micro jig + waxworm, Small spoon tipped |
| Winter | 3 to 11 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Pumpkinseed fishing at Grindstone River - Grindstone Reservoir
Spring pumpkinseed on Grindstone River - Grindstone Reservoir hold shallow, usually 1 to 8 ft. Summer pushes them deeper, 2 to 10 ft, and winter fish settle into 3 to 11 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. Plan around the evening and early morning in the warm months. A micro tube or a sponge spider (fly) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Micro tube, Sponge spider (fly) |
| Fall | 3 to 11 ft | dusk & dawn | Micro jig + waxworm, Small spoon tipped |
| Winter | 3 to 11 ft | dawn | Tungsten ice jig + plastic, Tiny spoon |
Common Carp fishing at Grindstone River - Grindstone Reservoir
Start shallow in spring: common carp sit in 2 to 10 ft that time of year. They move out to 2 to 11 ft in summer and finish the year down in 3 to 11 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | |
| Summer | 2 to 11 ft | dawn & dusk | |
| Fall | 3 to 11 ft | midday | |
| Winter | 3 to 11 ft | midday |
Notable structure
- Deep basin: deep basin, around 9 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Break off the point: drop-off, around 5 ft
- Shallow bay flat: weed flat, around 3 ft
- Back-bay flat: weed flat, around 3 ft
Common questions
How deep is Grindstone River - Grindstone Reservoir?
Grindstone River - Grindstone Reservoir is about 11 ft at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Grindstone River - Grindstone Reservoir?
Anglers target northern pike, crappie, bluegill, common carp, rock bass, pumpkinseed on Grindstone River - Grindstone Reservoir.
Where is the best fishing spot on Grindstone River - Grindstone Reservoir?
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for northern pike in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Grindstone River - Grindstone Reservoir?
For northern pike, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Grindstone · Kettle River · Elbow · Indian · Bass · Fish
See how Grindstone River - Grindstone Reservoir stacks up: best northern pike lakes in Minnesota · best crappie lakes in Minnesota · best bluegill lakes in Minnesota · best common carp lakes in Minnesota
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