A wide-open sky and strong sun today, with a helpful ripple pushed from the NW with pressure climbing. On Grindstone Lake, work the shaded margin through bright spells first. The strongest window runs from the day. Stay mobile and follow the activity. Autumn fish are feeding up and less fussy than in summer.
The bites are excellent now
Night
Out in Pine County, Minnesota, sits Grindstone Lake. It sits at 1,089 feet above sea level. At some 521 acres it is far too large to cover on foot in a day. Shoreline length is close to 4.8 miles, and each section fishes a little differently. It is among the larger waters listed here for Pine County. Nearest place of any size is Sandstone, 6.7 miles away. The nearest city of size is Minneapolis, 80 miles away. This one sits near enough to a boundary to be worth checking.
The basin drops to a measured 175 feet. Bays and points beat straight shoreline every time on water like this. On a natural lake the weed line and the shelf beyond it do the work. Fish documented in Pine County include northern pike, bluegill, largemouth bass, black crappie and pumpkinseed. Take it as the county picture rather than a promise for this water. At Grindstone Lake the water rewards a slow, careful approach.
Typical July readings run about 68°F; by January the average is down near 7°F. Fishing here follows the temperature more than the calendar. The lid usually goes in mid April, which opens the strongest weeks of the year. The lid tends to go about mid April and return around late November. The middle of summer slows a little, with dawn and dusk carrying it. Time your trip to Grindstone Lake by conditions rather than dates.
We hold no note on access for this one. No dam controls it, and the level follows the season. Mapping shows an empty shoreline: no ramp, no jetty, no marked entry. Largemouth respond to soft plastics tight to cover; go weedless where the growth is heavy. Check whether a boat is allowed before you tow one. A polite question at the farm gate opens more banks than anything else. Thirteen Lake sits 2.8 miles off and takes the overflow. Check the current arrangement for Grindstone Lake.
80%
The bites are excellent now
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 6.4 | 6.6 | 6.2 | 6.5 | 6.4 | 6.6 | 6.4 | 7.3 | 8.7 | 10.2 | 11.8 | 11.7 | 11.3 | 10.8 | 10.5 | 9.4 | 6.4 | 4.8 | 4.2 | 3.5 | 2.9 | 2 | 2.5 | 2.9 |
| 43° | 42° | 41° | 40° | 39° | 39° | 38° | 37° | 38° | 43° | 46° | 48° | 49° | 50° | 51° | 51° | 49° | 46° | 44° | 42° | 41° | 40° | 39° | 38° |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 29.86 | 29.87 | 29.88 | 29.88 | 29.9 | 29.92 | 29.94 | 29.95 | 29.98 | 30.01 | 30 | 30.01 | 30.01 | 30.01 | 30.02 | 30.02 | 30.01 | 30.02 | 30.03 | 30.04 | 30.04 | 30.04 | 30.04 | 30.04 |
| 88 | 86 | 83 | 85 | 83 | 80 | 80 | 84 | 84 | 79 | 76 | 74 | 72 | 69 | 68 | 68 | 72 | 77 | 83 | 86 | 88 | 91 | 93 | 94 |
Sam
AI Fishing Assistant for Grindstone Lake
Morning
Afternoon
Evening
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time