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Rating depth structure for largemouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
51-acre lake in Oneida County, Wisconsin. The lake tops out around 24 ft. The contours come from a model of the real basin shape and its known max depth. Read them as probabilities, not soundings, and keep them out of navigation decisions. Species by species, here's what the data says the year looks like.
Drawn out, this is 51 acres of water rimmed by 1.7 miles of bank. Index 1.7 on the shoreline: a few honest points and pockets, nothing labyrinthine. 78% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. End to end it runs roughly 0.5 mi, about 0.3 mi across. The water lies in Oneida County. Closest neighbour on DepthScout: Little Tomahawk Lake, 0 mi northeast of here.
Spring puts largemouth bass in skinny water — 2 to 10 ft is the zone. As the season builds they drop to 8 to 20 ft, wintering in 7 to 24 ft. Spring largemouth bass concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Warm-month bites cluster around early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (3 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Main-lake point (8 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (8 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 7 to 24 ft | midday | Deep basin (20 ft) | Blade bait, Jigging spoon |
Structure-wise the chart holds 4 features, led in depth by Deep basin at roughly 20 ft.
Season dates, license requirements, and size and bag limits for Wisconsin waters are set by the Wisconsin DNR — and special regulations can apply to McGrath Lake specifically, so confirm the current rules before you fish.
Check the official Wisconsin fishing regulations →
McGrath Lake is about 24 ft (7 m) deep 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.
Anglers target largemouth bass on McGrath Lake. 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.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for largemouth bass in spring. The map above holds the full rated-spot list for every species and season.
For largemouth bass, 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.
Fishing on McGrath Lake is regulated by the Wisconsin DNR. Check the official Wisconsin regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Little Tomahawk Lake 0 mi · Big Carr Lake 1 mi · Mud Lake 1 mi · Camp Twenty-one Lake 1 mi · Bird Lake 1 mi · Little Carr Lake 1 mi · North Two Lakes 2 mi · South Two Lakes 2 mi · Inkwell Lake 2 mi · Foster Lake 2 mi · Wind Pudding Lake 2 mi · Miller Lake 2 mi
See how McGrath Lake stacks up: best largemouth bass lakes in Wisconsin
More water nearby: Oneida County fishing maps (372 charts). Browse all Wisconsin fishing maps or see every water on DepthScout. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.