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Rating depth structure for yellow perch.
Shared by DepthScout anglers. Exact spots stay private, always.
105-acre lake near Lake County. The lake tops out around 43 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here is how the season plays out for each species, straight from the data behind the map.
The drawn water covers 89 acres wrapped in 2 miles of bank. With a 1.5 development index there's bank structure worth casting at, in moderation. The shallow band under 15 ft claims about 28% of the surface — that's where the groceries are. Figure 0.7 mi of water from one end to the other, 0.4 mi at the beam. Lake County claims this one. Sand Lake sits 1 mi east — the closest neighbouring chart.
The spring pattern is a shallow one: yellow perch in 3 to 12 ft. As the season builds they drop to 10 to 30 ft, wintering in 15 to 35 ft. Top water on the chart: Back-bay flat, a weed flat in the 9 ft range, prime in spring. Time it for early morning. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Back-bay flat (9 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Shallow bay flat (13 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Deep basin (41 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Deep basin (41 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Start shallow in spring: rock bass sit in 2 to 10 ft that time of year. Warm water sends them out to 5 to 20 ft; cold water stacks them in 12 to 30 ft. Top water on the chart: Main-lake point, a point in the 11 ft range, prime in summer. Fish it in the evening and you'll meet the bite. Throw a ned rig (small) or a marabou jig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Secondary point (8 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 5 to 20 ft | dusk | Main-lake point (11 ft) | Ned rig (small), Marabou jig |
| Fall | 8 to 22 ft | midday | Break off the point (7 ft) | Small tube jig, Inline spinner |
| Winter | 12 to 30 ft | midday | Break off the point (7 ft) | Tungsten jig + plastic, Small spoon + spike |
Come spring, look for brown bullhead tight to the bank in 2 to 8 ft. They move out to 3 to 12 ft in summer and finish the year down in 10 to 25 ft. If you only fish one area, make it Back-bay flat: a weed flat around 9 ft that scores prime in summer. Best bite is after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Back-bay flat (9 ft) | |
| Summer | 3 to 12 ft | night & dusk | Back-bay flat (9 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (13 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (41 ft) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 41 ft.
Season dates, license requirements, and size and bag limits for Michigan waters are set by the Michigan DNR — and special regulations can apply to Cool Lake specifically, so confirm the current rules before you fish.
Check the official Michigan fishing regulations →
Cool Lake is about 43 ft (13 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target yellow perch, rock bass, brown bullhead on Cool Lake.
Back-bay flat is the top-rated area: a weed flat in about 9 ft of water that rates prime for yellow perch in spring. Open the map above to see every rated spot for each species and season.
For yellow perch, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Cool Lake is regulated by the Michigan DNR. Check the official Michigan regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Sand Lake 1 mi · Elbow Lake 2 mi · Pine Lake 3 mi · Woods, Lake of the 4 mi · Bass Lake 5 mi · Sauble Lake #3 6 mi · Loon Lake 6 mi · Sauble Lake #1 7 mi · Tippy Dam Pond 8 mi · Little Syers Lake 10 mi · Dickson Lake 10 mi · Chancellor Lake 11 mi
See how Cool Lake stacks up: best yellow perch lakes in Michigan · best rock bass lakes in Michigan · best brown bullhead lakes in Michigan
More water nearby: Lake County fishing maps (22 charts). Browse all Michigan fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. 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.