Grassy Lake, Montana: Fishing Spots and Seasons

• Overview

  You will find Grassy Lake in Hill County, Montana. It lies 2,730 feet above sea level. Surface area is around 82 acres, which gives you real water without needing a boat. Our Hill County list holds plenty of bigger water. The nearest town is Havre, 21 miles away. After that come Chinook at 32 miles and Fort Belknap Agency at 54 miles. The county line is nowhere near, so one local authority covers the water.

• Where to Fish on Grassy Lake

  We hold no survey for this water; read the slope of the shoreline instead. Held water runs deepest at the wall and shallows back to the inflow. Draw-down through summer strips the margins, so follow the water out. Across Hill County, recorded fish include black crappie, rainbow trout, northern pike and yellow perch. Records at this level tell you what is in the area. Fish Grassy Lake to its features, not to its size.

• Seasonal Patterns

  The year swings from about 10°F in January to roughly 67°F in July. Fishing here follows the temperature more than the calendar. Expect a solid lid for months and a thaw around mid April. The lid tends to go about mid April and return around late November. June through September is the settled part of the year, with the shoulders busier for fish. That shapes the year on Grassy Lake.

• Tackle & Baits

  Ownership and access are not documented in what we hold. There is no mapped parking or launch nearby, which keeps numbers down. Largemouth respond to soft plastics tight to cover; go weedless where the growth is heavy. Season dates differ by species, so read the table. Barbless rules turn up on managed water more often than not. Failing this one, try Creedman Reservoir, 8.3 miles away. What applies at Grassy Lake may have changed since it was mapped.