Mary Lake Depth Map & Fishing Spots (CA)

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Lake depth chart

Mary Lake, CA

Max 10 ft

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Where to start

Callibaetis (Speckled Dun) window is on — see the hatch outlook

Hatch outlook

Callibaetis (Speckled Dun)Active window

Typical here: May 1 – Oct 1 · multi-brood; a documented midsummer lull when surface temps push fish deep

nymphthe hours before the midday emergence — nymphs rise off the weed tops in a vertical zigzag that can take hours — sources split between slow 2–4 inch strips with long pauses and a quicker steady retrieve; carry both speeds
dunmidday, roughly 11am into early afternoon
spinnermid-to-late-morning falls

Trout browse the weed-bed edges knocking nymphs loose, then cruise the flats sipping duns at midday — the marquee western lake mayfly.

The midday emergence puts cruisers over weed flats in under 20 ft: a casting bubble with a #14 Callibaetis nymph retrieved dead-slow with pauses is the honest match. Between hatch hours, small spoons and #1 inline spinners along the weed edges and drop-offs pick off the same fish.

The event happens over weed flats and weed-bed edges in 20 ft of water or less

Chironomids (stillwater midges)Active window

Typical here: Apr 25 – Oct 31 · end of April to the end of October at Crowley — the main food source for the entire season

nymphearly morning, start of the day — fish the bloodworm ON the bottom — 4–6 inches off the mud before the emergence starts
pupathe cool morning hours are prime — as the emergence builds, slide the pupa up to 12–15 inches off bottom under the indicator; a little wind chop does the jigging

Concentrates by DEPTH BAND and mud type, not a fixed spot: roughly 20–25 ft in spring, deeper midsummer, in against the feeder creeks in summer heat, 5–25 ft in fall. Match the band.

This one translates almost perfectly: a slip float with a 1/64–1/100 oz midge-pattern jig set 4–15 inches off bottom over a mud flat, dead-sticked with the chop doing the work. Depth control is everything — no moving lure imitates a hanging pupa; the float rig IS the technique.

The event happens over open mud flats alongside weedlines, channels and basin edges; feeder-creek mouths in summer heat

Grasshoppers (east-side summer)Active window

Typical here: Jul 1 – Sep 30 · the East Walker and Upper Owens terrestrial program

adultall day in high summer, best when afternoon wind knocks bugs onto the water

Pulls fish to the windward grassy banks and edges for months — fish the bank the wind blows ONTO.

The friendliest crossover of the summer: on lakes, drift the windward bank with a bubble-and-foam-hopper — the bubble's splash doesn't hurt a hopper presentation. On rivers, the same rig dead-drifted along the undercut grass banks, or small gold spinners under the banks between rises.

The event happens over grassy banks, undercut edges and windward shorelines

Next on this water

Damselfly migration · forageMay 25 – Aug 31 · in ~9 months

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours on this water are approximations. Never use for navigation. Always check local regulations.

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Recent catches at Mary Lake

Shared by DepthScout anglers. Exact spots stay private, always.

No shared catches here yet — be the first.Log a catch from the map above and share it to put Mary Lake on the board.

Fishing Mary Lake: what the data says

104-acre lake near Mono County. The lake tops out around 10 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Every species below gets its seasonal read from the same numbers driving the chart.

The drawn water covers 104 acres wrapped in 2 miles of bank. Nearly circular (index 1.4), so the story is the bottom, not the bank. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. End to end it runs roughly 0.7 mi, about 0.4 mi across. It sits in Mono County. George Lake sits 1 mi west — the closest neighbouring chart.

Brook Trout fishing at Mary Lake

Spring brook trout on Mary Lake hold shallow, usually 1 to 10 ft. Depth-wise the year is flat: 3 to 10 ft in summer, 2 to 10 ft once it turns cold. The chart's best answer is Deep basin — deep basin, 9 ft, prime for summer. Prime time lands in early morning and the evening. The summer box starts with a small spoon fished deep or a trolled lake-clear wobbler + worm.

Season	Depth	Best window	Start at	Go-to baits
Spring	1 to 10 ft	dawn & dusk	Main-lake point (8 ft)	Small inline spinner (gold), Tiny spoon
Summer	3 to 10 ft	dawn & dusk	Deep basin (9 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	1 to 10 ft	midday & dawn	Main-lake point (8 ft)	Small spoon (orange), Spinner
Winter	2 to 10 ft	dawn	Deep basin (9 ft)	Small jigging spoon, Tungsten jig + plastic

Brown Trout fishing at Mary Lake

Spring puts brown trout in skinny water — 1 to 10 ft is the zone. Summer fish stay in 3 to 10 ft, and winter fish hold in 1 to 10 ft. Break off the point is the standout, a drop-off at roughly 5 ft, rated prime for summer brown trout. Plan around after dark and early morning in the warm months. A spoon at the thermocline or a deep stickbait (night) covers the summer program.

Season	Depth	Best window	Start at	Go-to baits
Spring	1 to 10 ft	dawn & dusk	Main-lake point (8 ft)	Stickbait off planer boards (shallow), Small spoon along mud lines
Summer	3 to 10 ft	night & dawn	Break off the point (5 ft)	Spoon at the thermocline, Deep stickbait (night)
Fall	2 to 10 ft	dusk & dawn	Main-lake point (8 ft)	Jerkbait over gravel, Casting spoon
Winter	1 to 10 ft	dawn	Break off the point (5 ft)	Jigging spoon, Small stickbait (slow)

Rainbow Trout fishing at Mary Lake

Early season rainbow trout use the shallows, holding in 3 to 10 ft. Even in summer they hold at 3 to 10 ft; winter keeps them in 2 to 10 ft. Put Break off the point first on the milk run — a drop-off near 5 ft that grades prime for winter. In summer the feeding windows fall in early morning and the evening. Tie on a dodger + spoon (deep troll) or a flutter spoon and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 10 ft	dawn & dusk	Main-lake point (8 ft)	Inline spinner (silver), Small spoon
Summer	3 to 10 ft	dawn & dusk	Break off the point (5 ft)	Dodger + spoon (deep troll), Flutter spoon
Fall	3 to 10 ft	dawn & dusk	Main-lake point (8 ft)	Casting spoon, Jerkbait over shoals
Winter	2 to 10 ft	dawn	Break off the point (5 ft)	Jigging spoon, Tube jig (white)

Notable structure

Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 9 ft.

Deep basin: deep basin, around 9 ft
Main-lake point: point, around 8 ft
Secondary point: point, around 8 ft
Break off the point: drop-off, around 5 ft
Shallow bay flat: weed flat, around 3 ft
Back-bay flat: weed flat, around 3 ft

Mary Lake fishing regulations

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

Check the official California fishing regulations →

Common questions

How deep is Mary Lake?

Mary Lake is about 10 ft (3 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.

What fish are in Mary Lake?

Anglers target brook trout, brown trout, rainbow trout on Mary Lake.

Where is the best fishing spot on Mary Lake?

Break off the point is the top-rated area: a drop-off in about 5 ft of water that rates prime for brown trout in summer. Every other rated spot, per species and season, is on the map above.

When is the best time to fish Mary Lake?

For brook 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 Mary Lake?

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

Nearby waters

George Lake 1 mi · Mamie Lake 1 mi · Edith Lake 7 mi · Genevieve Lake 7 mi · Dorothy Lake 8 mi · Convict Lake 8 mi · Bright Dot Lake 9 mi · Constance Lake 9 mi · Agnew Lake 13 mi · Gem Lake 13 mi · June Lake 13 mi · Waugh Reservoir 15 mi

See how Mary Lake stacks up: best rainbow trout lakes in California · best brown trout lakes in California · best brook trout lakes in California

More water nearby: Mono County fishing maps (9 charts). Browse all California 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.