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13-acre lake near Avon. The lake tops out around 18 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Below is the species-by-species picture, pulled from the same data the map uses.
Drawn out, this is 13 acres of water rimmed by 0.6 miles of bank. A shoreline index of 1.2 says round and simple: fish relate to depth changes here, not shoreline features. 95% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. The water lies in Capitol County. The nearest mapped water is Twin Lakes North, 0 mi to the northeast.
Start shallow in spring: rainbow trout sit in 5 to 18 ft that time of year. They don't go far with the seasons — 5 to 18 ft covers summer, 4 to 18 ft covers winter. Top water on the chart: Deep basin, a deep basin in the 17 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 18 ft | dawn & dusk | Shallow bay flat (4 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 18 ft | dawn & dusk | Deep basin (17 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 5 to 18 ft | dawn & dusk | Deep basin (17 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 18 ft | dawn | Deep basin (17 ft) | Jigging spoon, Tube jig (white) |
Spring brown trout on Twin Lakes South hold shallow, usually 2 to 18 ft. Depth-wise the year is flat: 5 to 18 ft in summer, 3 to 18 ft once it turns cold. Put Deep basin first on the milk run — a deep basin near 17 ft that grades prime for summer. The feeding windows run after dark and early morning. The summer box starts with a spoon at the thermocline or a deep stickbait (night).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 18 ft | dawn & dusk | open water | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 5 to 18 ft | night & dawn | Deep basin (17 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 3 to 18 ft | dusk & dawn | open water | Jerkbait over gravel, Casting spoon |
| Winter | 3 to 18 ft | dawn | Deep basin (17 ft) | Jigging spoon, Small stickbait (slow) |
Spring walleye on Twin Lakes South hold shallow, usually 4 to 15 ft. They move out to 5 to 18 ft in summer and finish the year down in 5 to 18 ft. Put Deep basin first on the milk run — a deep basin near 17 ft that grades prime for winter. The feeding windows run the evening and early morning. The summer box starts with a crawler harness on bottom bouncer or a deep crankbait (trolled).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | open water | 1/8 oz jig + minnow, Hair jig |
| Summer | 5 to 18 ft | dusk & dawn | Deep basin (17 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 5 to 18 ft | dusk & night | Deep basin (17 ft) | Jigging rap, Jig + big minnow |
| Winter | 5 to 18 ft | dusk & dawn | Deep basin (17 ft) | Jigging spoon + minnow head, Rattle bait |
Early season yellow perch use the shallows, holding in 3 to 12 ft. Expect a summer slide to 5 to 18 ft, then a winter hold in 5 to 18 ft. Put Shallow bay flat first on the milk run — a weed flat near 4 ft that grades prime for spring. In summer the feeding windows fall in early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (4 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 5 to 18 ft | dawn | Deep basin (17 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 5 to 18 ft | midday | Deep basin (17 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 5 to 18 ft | midday & dawn | Deep basin (17 ft) | Tungsten jig + spikes, Rattle spoon (small) |
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 5 to 18 ft, and winter fish settle into 5 to 18 ft. Deep basin is the standout, a deep basin at roughly 17 ft, rated good for winter smallmouth bass. Time it for early morning and the evening. You won't need more than a drop shot (goby/minnow) or a ned rig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | open water | Ned rig, Tube jig |
| Summer | 5 to 18 ft | dawn & dusk | open water | Drop shot (goby/minnow), Ned rig |
| Fall | 5 to 18 ft | midday & dawn | open water | Jerkbait, Blade bait |
| Winter | 5 to 18 ft | midday | Deep basin (17 ft) | Blade bait, Hair jig |
Spring puts largemouth bass in skinny water — 2 to 10 ft is the zone. As the season builds they drop to 5 to 18 ft, wintering in 5 to 18 ft. Spring largemouth bass concentrate at Shallow bay flat, a prime-rated weed flat around 4 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 (4 ft) | Spinnerbait, Chatterbait |
| Summer | 5 to 18 ft | dawn & dusk | Shallow bay flat (4 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Shallow bay flat (4 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 5 to 18 ft | midday | Deep basin (17 ft) | Blade bait, Jigging spoon |
Twin Lakes South also holds rock bass (5 to 18 ft in summer), white perch (5 to 18 ft in summer), crappie (5 to 18 ft in summer), bluegill (4 to 15 ft in summer), pumpkinseed (2 to 10 ft in summer), brown bullhead (3 to 12 ft in summer), channel catfish (5 to 18 ft in summer), common carp (3 to 15 ft in summer), chain pickerel (3 to 15 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Twin Lakes South carries 3 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 17 ft down.
Season dates, license requirements, and size and bag limits for Connecticut waters are set by the Connecticut DEEP — and special regulations can apply to Twin Lakes South specifically, so confirm the current rules before you fish.
Check the official Connecticut fishing regulations →
Twin Lakes South is about 18 ft (5 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target rainbow trout, brown trout, walleye, yellow perch, smallmouth bass, largemouth bass, rock bass, white perch, crappie, bluegill, pumpkinseed, brown bullhead, channel catfish, common carp, chain pickerel on Twin Lakes South. This isn't a survey of the lake — none is on record for it — but an informed estimate from the species listed for the nearest surveyed lakes in the region, filtered to this lake's depth and habitat.
Deep basin is the top-rated area: a deep basin in about 17 ft of water that rates prime for walleye in winter. Open the map above to see every rated spot for each species and season.
For rainbow trout, 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 Twin Lakes South is regulated by the Connecticut DEEP. Check the official Connecticut regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Twin Lakes North 0 mi · Farmington River 6 mi · Batterson Park Pond 8 mi · Rainbow Reservoir 8 mi · McDonough Lake 9 mi · Wethersfield Cove 11 mi · Crescent Pond 12 mi · Keeney Cove 12 mi · West Hill Pond 12 mi · Crow Point Cove 13 mi · Burr Pond 15 mi · Congamond Lakes South Pond 15 mi, MA/CT
See how Twin Lakes South stacks up: best largemouth bass lakes in Connecticut · best smallmouth bass lakes in Connecticut · best walleye lakes in Connecticut · best crappie lakes in Connecticut
More water nearby: Capitol County fishing maps (22 charts). Browse all Connecticut fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.