Thompson Lake Depth Map & Fishing Spots (Chugach Borough, AK)

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours here are interpolated from real agency depth surveys (state DNR / USACE). Never use for navigation. Always check local regulations.

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Recent catches at Thompson Lake

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Fishing Thompson Lake: what the data says

26-acre stocked lake in the PWS area. ADF&G sonar-surveyed water with stocked rainbow trout and 2 more species. The lake tops out around 23 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. The season-by-season read for each species follows, from the map's own numbers.

The outline encloses 26 acres, worked by 1.2 miles of shoreline. A middling shoreline index (1.7) gives it some bays to work without being a maze. Littoral water — the productive band under ~15 ft — makes up 97% of this chart. Figure 0.5 mi of water from one end to the other, 0.2 mi at the beam. Chugach Borough claims this one. If the bite dies, Blueberry Lake is 1 mi to the west.

Rainbow Trout fishing at Thompson Lake

When the water first warms, rainbow trout slide up into 5 to 20 ft. Summer is a 6 to 23 ft game here, winter a 5 to 23 ft one. The feeding windows run early morning and the evening. Keep a dodger + spoon (deep troll) or a flutter spoon rigged through the warm months.

Season	Depth	Best window	Start at	Go-to baits
Spring	5 to 20 ft	dawn & dusk	open water	Inline spinner (silver), Small spoon
Summer	6 to 23 ft	dawn & dusk	open water	Dodger + spoon (deep troll), Flutter spoon
Fall	7 to 23 ft	dawn & dusk	open water	Casting spoon, Jerkbait over shoals
Winter	5 to 23 ft	dawn	open water	Jigging spoon, Tube jig (white)

Arctic Grayling fishing at Thompson Lake

Come spring, look for arctic grayling tight to the bank in 2 to 10 ft. They move out to 3 to 15 ft in summer and finish the year down in 7 to 23 ft. Best bite is the evening and early morning. A dry fly (parachute adams, elk hair caddis) or a small inline spinner is the honest summer answer here.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 10 ft	midday & dusk	open water	1/16 oz spinner (silver), Small dry fly (Adams, Griffith's)
Summer	3 to 15 ft	dusk & dawn	open water	Dry fly (parachute Adams, elk hair caddis), Small inline spinner
Fall	6 to 20 ft	midday	open water	Small spoon, Beadhead nymph under indicator
Winter	7 to 23 ft	midday & dawn	open water	Tungsten jig + waxworm, Small jigging spoon (gold)

Arctic Char fishing at Thompson Lake

In spring, arctic char run shallow here, mostly 4 to 15 ft. Midsummer fish sit out in 7 to 23 ft before dropping to 6 to 23 ft for winter. Fish it in early morning and you'll meet the bite. You won't need more than a jigging spoon vertical or a tube jig (smelt) most summer days.

Season	Depth	Best window	Start at	Go-to baits
Spring	4 to 15 ft	midday & dawn	open water	Small casting spoon (silver/orange), Jerkbait (small)
Summer	7 to 23 ft	dawn	open water	Jigging spoon vertical, Tube jig (smelt)
Fall	6 to 23 ft	midday & dusk	open water	Casting spoon (orange/gold), Beadhead streamer
Winter	6 to 23 ft	midday & dawn	open water	Jigging spoon (glow/silver), Tungsten jig + plastic

Thompson Lake fishing regulations

Season dates, license requirements, and size and bag limits for Alaska waters are set by the Alaska Department of Fish and Game — and special regulations can apply to Thompson Lake specifically, so confirm the current rules before you fish.

Check the official Alaska fishing regulations →

Common questions

How deep is Thompson Lake?

Thompson Lake is about 23 ft (7 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.

What fish are in Thompson Lake?

Anglers target rainbow trout, arctic grayling, arctic char on Thompson Lake.

When is the best time to fish Thompson Lake?

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.

What are the fishing regulations for Thompson Lake?

Fishing on Thompson Lake is regulated by the Alaska Department of Fish and Game. Check the official Alaska regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.

Nearby waters

Blueberry Lake 1 mi · Tonsina Lake 25 mi · Klutina Lake 39 mi · Crosswind Lake 85 mi · Tangle Pond 110 mi · Airstrip Pond 111 mi · Alder Pond 111 mi · Eklutna Lake 114 mi · Slipper (Eska) Lake 115 mi · Paxson Lake 124 mi · Edmonds Lake 125 mi · Mirror Lake 126 mi

See how Thompson Lake stacks up: best rainbow trout lakes in Alaska · best arctic grayling lakes in Alaska · best arctic char lakes in Alaska

Browse all Alaska 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.