Walleye fishing at Grandmother Flowage

In spring, walleye run shallow here, mostly 4 to 15 ft. Summer pushes them deeper, 7 to 22 ft, and winter fish settle into 7 to 22 ft. Deep basin is the standout, a deep basin at roughly 19 ft, rated prime for winter walleye. Best bite is the evening and early morning. Tie on a crawler harness on bottom bouncer or a deep crankbait (trolled) and you're in the game.

Yellow Perch fishing at Grandmother Flowage

Spring yellow perch on Grandmother Flowage hold shallow, usually 3 to 12 ft. By summer they slide out to 7 to 22 ft, and by winter most fish are in 7 to 22 ft. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for yellow perch in spring. In summer the feeding windows fall in early morning. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.

Northern Pike fishing at Grandmother Flowage

In spring, northern pike run shallow here, mostly 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring northern pike. 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.

Muskellunge fishing at Grandmother Flowage

In spring, muskellunge run shallow here, mostly 3 to 12 ft. By summer they slide out to 7 to 22 ft, and by winter most fish are in 7 to 22 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring muskellunge. In summer the feeding windows fall in the evening and early morning. Summer baits: a double-10 bucktail or a topwater (walk-the-dog / creeper) gets it done.

Smallmouth Bass fishing at Grandmother Flowage

In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. They move out to 7 to 22 ft in summer and finish the year down in 7 to 22 ft. The spot to know is Main-lake point, a point in about 8 ft of water that rates prime for smallmouth bass in fall. In summer the feeding windows fall in early morning and the evening. Tie on a drop shot (goby/minnow) or a ned rig and you're in the game.

Largemouth Bass fishing at Grandmother Flowage

In spring, largemouth bass run shallow here, mostly 2 to 10 ft. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 7 to 22 ft. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for largemouth bass in spring. In summer the feeding windows fall in early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.

How deep is Grandmother Flowage?

Grandmother Flowage is about 22 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 Grandmother Flowage?

Anglers target largemouth bass, smallmouth bass, walleye, northern pike, crappie, bluegill, muskellunge, yellow perch, pumpkinseed on Grandmother Flowage. These come from the Wisconsin DNR's per-lake fish listing; where the DNR lists a group (panfish, catfish, trout) the specific species are resolved from Wisconsin's fish distribution by the lake's location, depth and habitat.

Where is the best fishing spot on Grandmother Flowage?

Deep basin is the top-rated area: a deep basin in about 19 ft of water that rates prime for walleye in winter. Open the map above to see every rated spot for each species and season.

When is the best time to fish Grandmother Flowage?

For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.