Washington lake guide
Quincy Lake Fishing
Quincy Lake is a 54.4-acre Grant County rainbow-trout lake that is most useful early in the season. The March 1 opener, broad shoreline access, and quality trout make it a practical bank, small-boat, and fly-fishing destination. WDFW documents one concrete ramp, parking, a restroom, and camping at the Quincy Lake access area; the site is vehicle-accessible seasonally.
LocationGrant County, Washington
Primary targetsRainbow Trout
Best seasonSpring to early summer
Lake size54.4 acres
Guide reviewed
Scientific profile
Research snapshot
Average depth10 feet
Max depth20 feet
Elevation1,179 feet
Public launches1
Summer cautionWarm water
Lake depth map
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Contour line20 ft Visible depth label
Source: Washington State Department of Ecology. Historical survey data may not reflect current water levels or underwater hazards. Informational only; not for navigation.
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What makes Quincy Lake distinctive
Quincy Lake has documented stocking context in the FishyNW research record, adding a managed-fishery component to its profile.
Quincy Lake is documented in Grant County County with a dedicated FishyNW fishing and access profile.
Measured & official data
Water Science
Loading available public monitoring and fishery science…
Pass 3 · depth + water column
Seasonal Fish Habitat
Surface · 0 ft
How to read this data
Temperature, dissolved oxygen, clarity, nutrients, chlorophyll-a, pH, and conductivity are observations from public monitoring records and may be historical. Thermocline depth is shown only when FishyNW can derive a strong vertical temperature gradient from a measured profile. It is not treated as a permanent lake characteristic.
Trophic indication uses the Carlson Trophic State Index only when FishyNW can normalize a measured chlorophyll-a, Secchi, or total-phosphorus value. It is a derived ecological indicator, not an agency impairment determination.
Seasonal Fish Habitat is shown only when verified bathymetry overlaps a same-day, same-station temperature and dissolved-oxygen profile. It is a historical screening snapshot, not a live prediction of where fish are located.
For lake trout, FishyNW uses the broader USGS-tested screening combination of water at or below 15°C (59°F) and dissolved oxygen at or above 4 mg/L. For other coldwater species, FishyNW does not invent a preferred-temperature threshold; it shows only the observed thermocline-to-oxygenated-depth refuge when the evidence supports it.
Harmful-algae status is never inferred from missing data. Always check the linked state source for current advisories before contact recreation.
Open matched Water Quality Portal recordsFishery record
Documented fish species
These species come from the lake record. Open a species guide for identification, seasonal behavior, and practical tactics without confusing general species guidance with a lake-specific survey result.
Stocking information
Quincy Lake Fish Stocking
Recent stocking information summarized from Washington Department of Fish and Wildlife. Dates and quantities can change. Always verify current fishing rules with the official agency before fishing.
Most recent stockings
| Date | Species | Quantity | Size | Details |
|---|---|---|---|---|
| Sep 1, 1999 | Largemouth Bass | 225 | 10 fish/lb (~0.1 lb each) | COLUMBIA BASIN HATCHERY · Washington Department of Fish and Wildlife Fish Plants |
| Sep 1, 1999 | Largemouth Bass | 14 | 0.4 fish/lb (~2.5 lb each) | COLUMBIA BASIN HATCHERY · Washington Department of Fish and Wildlife Fish Plants |
Source: Washington Department of Fish and Wildlife Last checked: Aug 26, 2026 4:51pm
Fishery intelligence
Official fishery evidence
Agency survey records and measured fishery data, distilled for trip planning.
10
verified signals
Research & surveys
Official survey records available
Use the evidence
Turn records into a fishing plan
- Compare survey evidence with the seasonal guide.
- Use the map to connect depth, access, and structure.
- Confirm current rules and access before your trip.
Trip conditions
Current conditions
Loading the local forecast. Check access and official notices before leaving.
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WindLoading
GustsLoading
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Four day outlook
Tools
Today's Lure Pick
Open Tools for species-specific lure guidance.
Angler interpretation
How the fishery changes through the seasons
This is the practical layer: use it alongside the documented species, depth, stocking, survey, access, and regulation record above. The current season opens first.
Spring
trout- Start here
- Cooler water, recent stocking, fish moving shallow, and protected shorelines or inlets that warm first.
- Watch for
- Cold fronts, changing water levels, muddy inflow, and early-season ramp conditions.
Summer
listed species- Start here
- Fish early or late, then adjust toward deeper water, shade, vegetation, or comfortable temperature zones.
- Watch for
- Warm water, weeds, algae, heat, and heavier boat traffic.
Fall
trout- Start here
- Cooling water, shoreline structure, points, weed edges, and simple presentations that let you cover water.
- Watch for
- Wind on open water, rapidly changing weather, and shorter daylight windows.
Winter
trout- Start here
- Legal open-water or ice access, stable depth zones, and conservative cold-weather trip plans.
- Watch for
- Ice safety where relevant, ramps, road conditions, cold-water exposure, and current rules.
Know before you go
Rules and restrictions
The fishery opens March 1; two-pole fishing is allowed. Verify the current WDFW closing date and any emergency rule changes.
Local angler stops
Nearby bait & tackle
Independent and locally owned shops near this water. Call ahead if you need a specific bait or item.
Desert Fly Angler
Independent fly shopEphrata, Washington · Small Columbia Basin fly shop with flies, tying supplies, tackle, and local stillwater knowledge.
MarDon Tackle & Grocery
Local resort tackle and bait shopOthello, Washington · Independent Potholes Reservoir tackle and bait stop located at MarDon Resort.
Stan's Merry Mart
Independent local sporting goods and hardware storeWenatchee, Washington · Independently owned local store with a substantial sporting-goods department including fishing gear and licenses.
Local-business listings can change. FishyNW does not rank shops by payment or sponsorship. Verify current hours and inventory before driving.
Keep exploring
Nearby waters
Evergreen Reservoir
about 1.0 miles away
Evergreen Reservoir is a Quincy Lakes Wildlife Area warmwater fishery for largemouth and smallmouth bass, walleye, black crappie,…
Nunnally Lake about 20.8 miles awayNunnally Lake is a selective-gear quality trout lake near Lenice, offering a quieter small-craft experience for rainbow, brown,…
Lilly Lake — Chelan County about 21.1 miles awayLilly Lake south of Wenatchee is a small man-made Chelan County fishery for stocked and carryover Rainbow Trout,…
Lenice Lake about 21.1 miles awayLenice Lake is a 92.6-acre quality trout water north of Mattawa. It is especially popular with fly anglers,…
After the trip
Log what happened on the water
Use CatchSignal for catch reports, trip history, photos, and community activity. Keep your fishing history while controlling how much location detail you share.
Sources & feedback
Verified resources
Official links for this lake
Open the source that matches what you are planning.
Community feedback
See something that needs an update?
Send the correction and, when possible, the source. FishyNW reviews submissions before changing the guide.