Sprague Lake Depth Map & Fishing Spots (WA)

Hatch outlook

Callibaetis (Speckled Dun)Active window

Typical here: Aug 15 – Sep 15 · the smaller fall brood

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: May 1 – Oct 31

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

Water boatman fall flightsActive window

Typical here: Aug 25 – Oct 10 · peaks on crisp, bright fall days after the first cold snap

adultmiddday-ish on calm, sunny fall days — the fishable moment is the splashdown: boatmen dive in headfirst trailing an air bubble and make repeated trips back to the surface — a fly or lure that dives nose-first on the drop imitates exactly this

Takes are seldom subtle — trout ravage boatmen as they hit the water and during their subsurface runs.

Tailor-made for hardware: a small 1/16 oz silver-bellied spoon or jig cast AT the rings of a splashdown sinks headfirst exactly like the natural — twitch-pause it back through the top few feet. On flight days fan-cast the shallow weed margins.

The event happens over near-shore shallows, weed beds and shoal margins on calm sunny fall afternoons

Grasshoppers (east-side summer)Active window

Typical here: Jun 15 – Sep 30

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 15 – Jul 31 · in ~9 months

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.

Loading depth chart…

Recent catches at Sprague 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 Sprague Lake on the board.

Fishing Sprague Lake: what the data says

1,841-acre lake near Sprague. The lake tops out around 15 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. Here is how the season plays out for each species, straight from the data behind the map.

The drawn water covers 1,880 acres wrapped in 12.8 miles of bank — one island included. A middling shoreline index (2.1) gives it some bays to work without being a maze. Call it 4.9 mi long by 1.1 mi wide at the broadest reach. It sits in Lincoln County. Its nearest charted neighbour, Williams Lake, is 18 mi to the east.

Largemouth Bass fishing at Sprague Lake

Early season largemouth bass use the shallows, holding in 2 to 10 ft. Summer is a 5 to 15 ft game here, winter a 5 to 15 ft one. The chart's best answer is Break off the point — drop-off, 11 ft, prime for winter. Best bite is early morning and the evening. Tie on a texas-rigged 10" worm or a deep-diving crankbait and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 10 ft	dawn & dusk	Shallow bay flat (1 ft)	Spinnerbait, Chatterbait
Summer	5 to 15 ft	dawn & dusk	Break off the point (11 ft)	Texas-rigged 10" worm, Deep-diving crankbait
Fall	4 to 15 ft	midday & dawn	Main-lake point (1 ft)	Squarebill crankbait (shad), Spinnerbait
Winter	5 to 15 ft	midday	Break off the point (11 ft)	Blade bait, Jigging spoon

Crappie fishing at Sprague Lake

Spring crappie on Sprague Lake hold shallow, usually 2 to 8 ft. They move out to 5 to 15 ft in summer and finish the year down in 5 to 15 ft. Put Deep basin first on the milk run — a deep basin near 15 ft that grades prime for winter. The feeding windows run early morning and the evening. The summer box starts with a jig trolled/spider-rigged or a small crankbait (trolled).

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 8 ft	midday & dawn	Dock / pier line (7 ft)	1/16 oz jig + tube, Curly-tail grub
Summer	5 to 15 ft	dawn & dusk	Break off the point (11 ft)	Jig trolled/spider-rigged, Small crankbait (trolled)
Fall	5 to 15 ft	dawn	Break off the point (11 ft)	Jig + minnow combo, Small swimbait (1.5-2")
Winter	5 to 15 ft	midday	Deep basin (15 ft)	Tungsten jig + soft plastic, Tiny jigging spoon

Channel Catfish fishing at Sprague Lake

Early season channel catfish use the shallows, holding in 3 to 12 ft. Summer is a 5 to 15 ft game here, winter a 5 to 15 ft one. The chart's best answer is Deep basin — deep basin, 15 ft, prime for winter. Best bite is after dark and the evening.

Season	Depth	Best window	Start at
Spring	3 to 12 ft	dusk	open water
Summer	5 to 15 ft	night & dusk	Deep basin (15 ft)
Fall	5 to 15 ft	dusk	Deep basin (15 ft)
Winter	5 to 15 ft	midday	Deep basin (15 ft)

Bluegill fishing at Sprague Lake

Spring bluegill on Sprague Lake hold shallow, usually 1 to 6 ft. By summer they slide out to 4 to 15 ft, and by winter most fish are in 5 to 15 ft. The chart's best answer is Shallow bay flat — weed flat, 1 ft, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a small sponge spider (fly) or a micro tube jig.

Season	Depth	Best window	Start at	Go-to baits
Spring	1 to 6 ft	midday & dusk	Shallow bay flat (1 ft)	1/32 oz jig + micro plastic, Tiny popper (evenings)
Summer	4 to 15 ft	dawn & dusk	Dock / pier line (7 ft)	Small sponge spider (fly), Micro tube jig
Fall	5 to 15 ft	midday	Break off the point (11 ft)	Micro jig + waxworm, Small spoon tipped
Winter	5 to 15 ft	midday	Deep basin (15 ft)	Tungsten ice jig + plastic, Tiny spoon

Common Carp fishing at Sprague Lake

Come spring, look for common carp tight to the bank in 2 to 10 ft. Expect a summer slide to 3 to 15 ft, then a winter hold in 5 to 15 ft. Start at Deep basin. It's a deep basin holding about 15 ft of water and rates prime come winter. Prime time lands in early morning and the evening.

Season	Depth	Best window	Start at
Spring	2 to 10 ft	midday & dawn	Shallow bay flat (1 ft)
Summer	3 to 15 ft	dawn & dusk	Shallow bay flat (1 ft)
Fall	4 to 15 ft	midday	Deep basin (15 ft)
Winter	5 to 15 ft	midday	Deep basin (15 ft)

Rainbow Trout fishing at Sprague Lake

Come spring, look for rainbow trout tight to the bank in 4 to 15 ft. Through summer count on 4 to 15 ft; the winter hold is 3 to 15 ft. Start at Break off the point. It's a drop-off holding about 11 ft of water and rates prime come winter. Prime time lands in early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon is the honest summer answer here.

Season	Depth	Best window	Start at	Go-to baits
Spring	4 to 15 ft	dawn & dusk	Break off the point (11 ft)	Inline spinner (silver), Small spoon
Summer	4 to 15 ft	dawn & dusk	Break off the point (11 ft)	Dodger + spoon (deep troll), Flutter spoon
Fall	4 to 15 ft	dawn & dusk	Break off the point (11 ft)	Casting spoon, Jerkbait over shoals
Winter	3 to 15 ft	dawn	Break off the point (11 ft)	Jigging spoon, Tube jig (white)

Notable structure

Sprague Lake carries 7 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 15 ft down.

Deep basin: deep basin, around 15 ft
Break off the point: drop-off, around 11 ft
Dock / pier line: dock line, around 7 ft
Main-lake point: point, around 1 ft
Secondary point: point, around 1 ft
Shallow bay flat: weed flat, around 1 ft
Back-bay flat: weed flat, around 1 ft

Public access & boat ramps

Sprague Lake — ramp (concrete)

Access data: Washington WDFW — Water Access Sites. Confirm conditions and fees locally before you launch.

Sprague Lake stocking report

Date	Species	Count	Size
May 27	Rainbow trout	74,928	—
May 27	Channel Catfish	400	—
Mar 18	Rainbow trout	79,665	—
Mar 3	Rainbow trout	4,000	—
Mar 3	Rainbow trout	1,832	—
Mar 2	Rainbow trout	12,168	—

Source: WDFW fish-stocking reports, retrieved 2026-08-18.

Sprague Lake fishing regulations

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

Check the official Washington fishing regulations →

Common questions

How deep is Sprague Lake?

Sprague Lake is about 15 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.

What fish are in Sprague Lake?

Anglers target largemouth bass, crappie, channel catfish, bluegill, common carp, rainbow trout on Sprague Lake.

Where is the best fishing spot on Sprague Lake?

Break off the point is the top-rated area: a drop-off in about 11 ft of water that rates prime for largemouth bass in winter. The interactive chart above rates every spot for each species and season.

When is the best time to fish Sprague Lake?

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.

Is Sprague Lake stocked with fish?

Yes — per WDFW fish-stocking reports records, Sprague Lake was most recently stocked May 27 with 74,928 rainbow trout. The full stocking history is listed above.

What are the fishing regulations for Sprague Lake?

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

Nearby waters

Williams Lake 18 mi · Badger Lake 21 mi · Clear Lake 25 mi · West Medical Lake 27 mi · Medical Lake 27 mi · Spokane River 50 mi · Liberty Lake 53 mi · Windmill Lake 57 mi · Newman Lake 57 mi · Loon Lake 58 mi · Canal Lake 58 mi · Long Lake 59 mi

See how Sprague Lake stacks up: best largemouth bass lakes in Washington · best crappie lakes in Washington · best bluegill lakes in Washington · best channel catfish lakes in Washington

Browse all Washington 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.