Washington lake guide

Lake Morton Fishing

Lake Morton is a King County mixed fishery with stocked Rainbow Trout and resident Largemouth Bass. WDFW documents a northwest-shore public boat ramp, while King County maintains current lake-monitoring information that adds useful environmental context.

LocationKing County, Washington
Primary targetsLargemouth Bass, Rainbow Trout
Best seasonSpring through fall
Lake size66.3 acres

Guide reviewed

Map
Scientific profile

Research snapshot

Average depth15 feet
Max depth23 feet
Elevation526 feet
Summer cautionWarm water

Lake map

Did you know?

What makes Lake Morton distinctive

Lake Morton has documented stocking context in the FishyNW research record, adding a managed-fishery component to its profile.

Lake Morton is documented in King County County with a dedicated FishyNW fishing and access profile.

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Measured & official data

Water Science

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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.

Fishery 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.

Browse all species
Stocking information

Lake Morton 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

DateSpeciesQuantitySizeDetails
Mar 15, 2012 Coho 230 500 fish/lb (~0 lb each) MORTON JHS HS · Washington Department of Fish and Wildlife Fish Plants
May 7, 1998 Kokanee 13,005 765 fish/lb (~0 lb each) LAKEWOOD HATCHERY · Washington Department of Fish and Wildlife Fish Plants

Source: Washington Department of Fish and Wildlife Last checked: Aug 17, 2026 4:32am

Fishery intelligence

Official fishery evidence

Agency survey records and measured fishery data, distilled for trip planning.

9 verified signals
Research & surveys Official survey records available

Agency survey evidence is documented for this fishery.

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.
Open seasonal guidance
Trip conditions

Current conditions

Loading the local forecast. Check access and official notices before leaving.

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Four day outlook
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, bass
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

bass
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, bass
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

Verify current WDFW statewide and water-specific rules before fishing.

Check the official fishing source before your trip
Getting on the water

Access and launches

WDFW documents a public boat ramp on the northwest shore. The lake is a straightforward small-water option for trailerable boats, kayaks, and other small craft.

Sorry, there are no mapped boat ramps for this lake yet. Check the access information below for other ways to reach the water.

Local angler stops

Nearby bait & tackle

Independent and locally owned shops near this water. Call ahead if you need a specific bait or item.

Puget Sound Fly Shop

Family- and veteran-owned independent fly shop
19.6 mi

Tacoma, Washington · Independent Tacoma fly shop with rods, reels, flies, tying materials, instruction, and local knowledge for South Sound, trout, and steelhead fisheries.

Narrows Marina Bait & Tackle

Independent marina bait and tackle shop
22.8 mi

Tacoma, Washington · South Sound bait-and-tackle store carrying live and frozen bait, salmon and bottomfish tackle, river gear, rods, reels, downriggers, crab and shrimp gear, and fishing licenses.

Gig Harbor Fly Shop

Independent full-service fly shop
23.2 mi

Gig Harbor, Washington · Long-running independent fly shop with regional flies, rods, reels, tying gear, classes, rentals, and local lake, river, and Puget Sound fishing knowledge.

Local-business listings can change. FishyNW does not rank shops by payment or sponsorship. Verify current hours and inventory before driving.

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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
Community feedback

See something that needs an update?

Send the correction and, when possible, the source. FishyNW reviews submissions before changing the guide.