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Rating depth structure for largemouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
90-acre lake near Gaithersburg. The lake tops out around 30 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. Every species below gets its seasonal read from the same numbers driving the chart.
On the chart, Clopper Lake draws 87 acres inside 3.1 miles of shoreline. The 2.4 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. The shallow band under 15 ft claims about 80% of the surface on the model — that's where the groceries are. Figure 1 mi of water from one end to the other, 0.3 mi at the beam. The water lies in Montgomery County. For a second option, Little Seneca Lake lies 5 mi northwest.
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 9 to 30 ft. Shallow bay flat is the standout, a weed flat at roughly 4 ft, rated prime for spring largemouth bass. Time it for early morning and the evening. You won't need more than a texas-rigged 10" worm or a deep-diving crankbait most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (4 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (14 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 | 9 to 30 ft | midday | Break off the point (14 ft) | Blade bait, Jigging spoon |
Spring puts crappie in skinny water — 2 to 8 ft is the zone. As the season builds they drop to 10 to 25 ft, wintering in 9 to 30 ft. Winter crappie concentrate at Deep basin, a prime-rated deep basin around 26 ft. Warm-month bites cluster around early morning and the evening. A jig trolled/spider-rigged or a small crankbait (trolled) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (4 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Break off the point (14 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Break off the point (14 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 9 to 30 ft | midday | Deep basin (26 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
The spring pattern is a shallow one: bluegill in 1 to 6 ft. As the season builds they drop to 4 to 15 ft, wintering in 10 to 25 ft. Top water on the chart: Shallow bay flat, a weed flat in the 4 ft range, prime in spring. Time it for early morning and the evening. Summer baits: a small sponge spider (fly) or a micro tube jig gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (4 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Shallow bay flat (4 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Break off the point (14 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Deep basin (26 ft) | Tungsten ice jig + plastic, Tiny spoon |
In spring, channel catfish run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 8 to 25 ft, and winter fish settle into 9 to 30 ft. Deep basin is the standout, a deep basin at roughly 26 ft, rated prime for winter channel catfish. Time it for after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (4 ft) | |
| Summer | 8 to 25 ft | night & dusk | Deep basin (26 ft) | |
| Fall | 10 to 30 ft | dusk | Deep basin (26 ft) | |
| Winter | 9 to 30 ft | midday | Deep basin (26 ft) |
The spring pattern is a shallow one: muskellunge in 3 to 12 ft. As the season builds they drop to 8 to 25 ft, wintering in 9 to 30 ft. Top water on the chart: Break off the point, a drop-off in the 14 ft range, prime in fall. Time it for the evening and early morning. Summer baits: a double-10 bucktail or a topwater (walk-the-dog / creeper) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (4 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 8 to 25 ft | dusk & dawn | Main-lake point (8 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 8 to 30 ft | midday & dusk | Break off the point (14 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 9 to 30 ft | midday | Deep basin (26 ft) | Large rubber, crawled slow |
The chart marks 7 structure features on Clopper Lake; the deepest is Deep basin at about 26 ft.
Season dates, license requirements, and size and bag limits for Maryland waters are set by the Maryland DNR — and special regulations can apply to Clopper Lake specifically, so confirm the current rules before you fish.
Check the official Maryland fishing regulations →
Clopper Lake is about 30 ft (9 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, crappie, bluegill, channel catfish, muskellunge on Clopper Lake.
Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for largemouth bass in spring. Every other rated spot, per species and season, is on the map above.
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 Clopper Lake is regulated by the Maryland DNR. Check the official Maryland regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Little Seneca Lake 5 mi · T. Howard Duckett Reservoir 18 mi · Monocacy River 22 mi · Piney Run Lake 23 mi · Liberty Reservoir 27 mi · Occoquan Reservoir 30 mi, VA · Potomac River (Tidal) 32 mi, MD/DC · Greenbrier Lake 34 mi · Lake Brittle 36 mi, VA · Loch Raven Reservoir 42 mi · Gunpowder Falls 42 mi · Patapsco River 43 mi
See how Clopper Lake stacks up: best largemouth bass lakes in Maryland · best crappie lakes in Maryland · best bluegill lakes in Maryland · best channel catfish lakes in Maryland
Browse all Maryland 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.