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Lake Washington

Seattle · Mercer Island · Kirkland · Medina · Bellevue, Washington — King County.

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21,992Surface acres
25Public access sites
39.0 miShoreline trails

Surface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 148900411).

Location & fast facts

Where Lake Washington is in Washington

The red circle marks Lake Washington.

Fast facts

About Lake Washington

  • County: King
  • Cities & towns on the shore: Seattle, Mercer Island, Kirkland, Medina, Bellevue
  • Mapped as: Lake or pond (USGS National Hydrography Dataset)
  • Distance: about 2197 mi from Pensacola and 2278 mi from Panama City, straight-line (not driving distance)

Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline (Washington: incorporated places touching the lake, otherwise the nearest one).

Fishing in Washington

Official WDFW pages. Rules and fees change; check before you go.

Good for & watch for

Good for

  • Boating. 25 public trailer launches listed (see access)
  • Fishing. Rainbow trout, Chinook salmon and Coho salmon
  • Swimming. 18 public beach or swim spots on the map (details)
  • Walking. 39.0 mi of trail near the shore (trails)
  • Camping. 35 campgrounds within 15 mi (list)

Watch for

  • Non-native/invasive species. Eurasian watermilfoil, Common water-hyacinth and Curly-leaf pondweed recorded. Clean, drain and dry your boat and gear.
  • Boat traffic. A public trailer launch means motorboats share the water; expect more traffic on summer weekends.
  • No lifeguard listed. None of our sources lists a staffed lifeguard. Swim at your own risk and watch children closely.
  • Cold water. Water stays cold well into late spring and turns cold again in fall. Wear a life jacket when paddling in the shoulder seasons.

Built only from the data on this page: official access lists, OpenStreetMap beaches and trails, campground listings, state and USGS invasive-species records. We don't rate crowds or water quality.

Official stocking data (Washington WDFW)

Stocked by the state: Chinook salmon, Coho salmon, Rainbow trout (2015–2026, 12 years; 477,113 fish in all, fry included)

Source: Washington Department of Fish and Wildlife, WDFW Fish Plants data on data.wa.gov (releases into Lake Washington, King County, since 2015). See WDFW trout stocking reports. These are stocking records, not a full fish survey; other species also live here.

Lake map

Lake Washington shoreline, boat launches & beaches

Adams Street Boat Ramp (Boat launch)1Atlantic City Boat Ramp (Boat launch)2Boat ramp (Boat launch)3Boat ramp (Boat launch)4Boat ramp (Boat launch)5Boat ramp (Boat launch)6Boat ramp (Boat launch)7Boat ramp (Boat launch)8Boat ramp (Boat launch)9Boat ramp (Boat launch)10Boat ramp (Boat launch)11Boat ramp (Boat launch)12Boat ramp (Boat launch)13Boat ramp (Boat launch)14Boat ramp (Boat launch)15Boat ramp (Boat launch)16Boat ramp (Boat launch)17Boat ramp (Boat launch)18Boat ramp (Boat launch)19Boat ramp (Boat launch)20Boat ramp (Boat launch)21Ferdinand Street Boat Launch (Boat launch)22Marina Park Boat Ramp (Boat launch)23Northeast 42nd Street Boat Ramp (Boat launch)24SE 40th Boat Launch (Boat launch)25North Beach (Beach)26Mercerwood Shore Club beach (Beach)27Magnuson Park Beach (Beach)28Kennydale Beach (Beach)29Matthews Beach (Beach)30Mount Baker Beach (Beach)31Madison Park Beach (Beach)32Calkins Point (Beach)33Lake City Beach Park (Beach)34Pritchard Island Beach (Beach)35East Harrison Street End (Beach)36Road End Beach (Beach)37Rumford Beach (Beach)38Beach (unnamed on OpenStreetMap) (Beach)39Beach (unnamed on OpenStreetMap) (Beach)40Beach (unnamed on OpenStreetMap) (Beach)41Beach (unnamed on OpenStreetMap) (Beach)42Beach (unnamed on OpenStreetMap) (Beach)431 mileN

Numbers on the map match the list at rightbelow.

Boat launchBeachShoreline trail
  1. 1Adams Street Boat Ramp
    Boat launch · Seattle
  2. 2Atlantic City Boat Ramp
    Boat launch · Seattle
  3. 3Boat ramp
    Boat launch · Seattle
  4. 4Boat ramp
    Boat launch · Mercer Island
  5. 5Boat ramp
    Boat launch · Seattle
  6. 6Boat ramp
    Boat launch · Seattle
  7. 7Boat ramp
    Boat launch · Seattle
  8. 8Boat ramp
    Boat launch · Mercer Island
  9. 9Boat ramp
    Boat launch · Mercer Island
  10. 10Boat ramp
    Boat launch · Bellevue
  11. 11Boat ramp
    Boat launch · Renton
  12. 12Boat ramp
    Boat launch · Seattle
  13. 13Boat ramp
    Boat launch · Seattle
  14. 14Boat ramp
    Boat launch · Seattle
  15. 15Boat ramp
    Boat launch · Seattle
  16. 16Boat ramp
    Boat launch
  17. 17Boat ramp
    Boat launch
  18. 18Boat ramp
    Boat launch · Beaux Arts Village
  19. 19Boat ramp
    Boat launch · Seattle
  20. 20Boat ramp
    Boat launch · Kirkland
  21. 21Boat ramp
    Boat launch · Mercer Island
  22. 22Ferdinand Street Boat Launch
    Boat launch · Seattle
  23. 23Marina Park Boat Ramp
    Boat launch · Kirkland
  24. 24Northeast 42nd Street Boat Ramp
    Boat launch · Yarrow Point
  25. 25SE 40th Boat Launch
    Boat launch · Bellevue
  26. 26North Beach
    Beach
  27. 27Mercerwood Shore Club beach
    Beach
  28. 28Magnuson Park Beach
    Beach
  29. 29Kennydale Beach
    Beach
  30. 30Matthews Beach
    Beach
  31. 31Mount Baker Beach
    Beach
  32. 32Madison Park Beach
    Beach
  33. 33Calkins Point
    Beach
  34. 34Lake City Beach Park
    Beach
  35. 35Pritchard Island Beach
    Beach
  36. 36East Harrison Street End
    Beach
  37. 37Road End Beach
    Beach
  38. 38Rumford Beach
    Beach
  39. 39Beach (unnamed on OpenStreetMap)
    Beach
  40. 40Beach (unnamed on OpenStreetMap)
    Beach
  41. 41Beach (unnamed on OpenStreetMap)
    Beach
  42. 42Beach (unnamed on OpenStreetMap)
    Beach
  43. 43Beach (unnamed on OpenStreetMap)
    Beach

Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 148900411), public domain. State outline: U.S. Census Bureau TIGERweb. Points: WDFW water access sites and OpenStreetMap boat ramps (ODbL). Dashed trails: © OpenStreetMap contributors (ODbL). Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.

Shoreline trails

39.0 miTrail within 100 m of shore
About 45%Of the shoreline
NoLoops the whole lake
North and south shoresWhere

OpenStreetMap shows about 39.0 mi of public hiking and walking trail within about 100 m (330 ft) of the Lake Washington shoreline, mostly along the north and south shores. About 4.8 mi of it is on islands, which you can reach only by boat.

Trails along the shore

Trailheads & parking

The dashed brown line on the lake map shows these trails. We include paths, footways and marked trails that OpenStreetMap doesn't mark as private, and leave out roads, sidewalks and snowmobile corridors. Mapped trails can still cross private land or close for the season, and not every trail is mapped, so follow posted signs.

Trails: © OpenStreetMap contributors, available under the Open Database License (ODbL). Map data as of Oct 9, 2026. Trail lengths count only the parts within about 100 m of the USGS NHD lake outline.

Campgrounds near Lake Washington

We found 35 campgrounds and RV parks within 15 miles of Lake Washington, 2 of them within 5 miles. Distances are straight-line from the nearest point on the shoreline, so driving distance is longer.

14 more within 15 miles

All campgrounds & RV parks in Washington

Green tent icons on the lake map mark campgrounds near the shore, and the interactive map shows the closest 12. Amenities are listed only where a source records them; call or check the campground's website before you go, since seasons and rates change every year.

Campground data: OpenStreetMap contributors (ODbL). Pulled Oct 12, 2026.

Conditions right now

Air temperature & conditions (nearest NWS station)Loading…
Fetching the latest National Weather Service observation…

Live from the National Weather Service API for the lake's coordinates (47.6290, -122.2605). The nearest station may be several miles away. NWS forecast for Lake Washington. No live water-temperature sensor is shown because we haven't found a public one for this lake.

Sun, moon & best fishing times

Sun & moon at Lake Washington

Best fishing times

Major periodMinor periodDaylight

    Based on solunar theory, an estimate. Major periods (about 2 hours) center on when the moon is directly overhead or underfoot; minor periods (about 1 hour) center on moonrise and moonset. The 0–100 activity score rises during those periods and gets a boost near sunrise and sunset and around the new and full moon. Weather, water temperature and pressure often matter more. Sun and moon times are calculated in your browser from the lake's coordinates with standard astronomy formulas, shown in PT (America/Los_Angeles), and accurate to within a few minutes.

    Boat launches & access sites

    25 public access sites listed, 25 with a boat ramp or trailer launch.

    SiteTownOwnerTypeParkingFeeUsesMap
    Adams Street Boat RampSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5655, -122.2671
    Atlantic City Boat RampSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5229, -122.2632
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5712, -122.2768
    Boat rampMercer Island—Boat ramp (OpenStreetMap) · Yes ramp—FeeBoating47.5779, -122.2019
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp—No feeBoating47.6426, -122.2899
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.6769, -122.2499
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp—No feeBoating47.5905, -122.2859
    Boat rampMercer Island—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5245, -122.2261
    Boat rampMercer Island—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5851, -122.2535
    Boat rampBellevue—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5975, -122.2104
    Boat rampRenton—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5055, -122.2021
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.6880, -122.2633
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.6878, -122.2618
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp—No feeBoating47.6553, -122.2968
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.6476, -122.3000
    Boat ramp——Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5016, -122.2201
    Boat ramp——Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5007, -122.2193
    Boat rampBeaux Arts Village—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5865, -122.2057
    Boat rampSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.6891, -122.2646
    Boat rampKirkland—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.7018, -122.2239
    Boat rampMercer Island—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5274, -122.2221
    Ferdinand Street Boat LaunchSeattle—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.5573, -122.2615
    Marina Park Boat RampKirkland—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.6756, -122.2096
    Northeast 42nd Street Boat RampYarrow Point—Boat ramp (OpenStreetMap) · Yes ramp——Boating47.6474, -122.2216
    SE 40th Boat LaunchBellevue—Boat ramp (OpenStreetMap) · Yes ramp—No feeBoating47.5749, -122.1889

    WDFW water access sites and OpenStreetMap boat ramps (ODbL)

    Fees, hours and rules change; confirm with the site owner before you go.

    Public beaches

    On OpenStreetMap: 18 beaches and swimming spots on the shore of Lake Washington not marked private, residents-only or members-only.

    BeachTypeAccessDirections
    North BeachBeachAccess not tagged; check posted rulesGet directions
    Mercerwood Shore Club beachBeachAccess not tagged; check posted rulesGet directions
    Magnuson Park BeachBeachPublic accessGet directions
    Kennydale BeachBeachAccess not tagged; check posted rulesGet directions
    Matthews BeachBeachAccess not tagged; check posted rulesGet directions
    Mount Baker BeachBeachAccess not tagged; check posted rules; hours: Mo-Fr 12:00-19:00, Sa-Su 11:00-19:00Get directions
    Madison Park BeachBeachAccess not tagged; check posted rulesGet directions
    Calkins PointBeachAccess not tagged; check posted rulesGet directions
    Lake City Beach ParkBeachPublic accessGet directions
    Pritchard Island BeachBeachAccess not tagged; check posted rulesGet directions
    East Harrison Street EndBeachAccess not tagged; check posted rulesGet directions
    Road End BeachBeachAccess not tagged; check posted rulesGet directions
    Rumford BeachBeachAccess not tagged; check posted rules; run by City of Seattle; hours: Mo-Su 09:00-21:00Get directions
    Beach (unnamed on OpenStreetMap)BeachPublic access; no fee; lifeguards (seasonal)Get directions
    Beach (unnamed on OpenStreetMap)BeachAccess not tagged; check posted rulesGet directions
    Beach (unnamed on OpenStreetMap)BeachPublic access; no feeGet directions
    Beach (unnamed on OpenStreetMap)BeachAccess not tagged; check posted rulesGet directions
    Beach (unnamed on OpenStreetMap)Swimming spotPublic accessGet directions

    Beaches: © OpenStreetMap contributors (ODbL), within about 150 m (500 ft) of the lake outline. A mapped beach is not a guarantee that swimming is allowed, supervised or safe; some town beaches need a resident sticker even when the map doesn't say so. Check posted rules and water-quality advisories before you swim.

    Non-native/invasive species

    Reported on or near Lake Washington

    Clean, Drain, Dry. Remove plants and mud, drain all water, and dry your boat, trailer and gear before moving to another water.

    USGS Nonindigenous Aquatic Species database

    USGS records matched to this water by location (within about 150 m of the outline) or by the place name in the record. A record shows a sighting was reported; it doesn't prove the species is still there. As of Oct 10, 2026.

    Contact & official info

    Questions about Lake Washington

    How big is Lake Washington?

    Lake Washington covers about 21,992 acres in Seattle, Mercer Island, Kirkland and Medina, Washington (King County).

    What fish are in Lake Washington?

    WDFW fish stocking records lists Rainbow trout, Chinook salmon and Coho salmon.

    Is there a public boat launch on Lake Washington?

    Yes. 25 public trailer launches are listed: Boat ramp, Boat ramp and SE 40th Boat Launch. Check posted fees and parking rules.

    Can you swim in Lake Washington?

    OpenStreetMap shows 18 public beach or swimming spots on the shore. None of our sources lists a lifeguard, so swim at your own risk and follow posted rules.

    Are there campgrounds near Lake Washington?

    Yes. We list 35 campgrounds and RV parks within 15 miles, 2 of them within 5 miles.

    What towns are on Lake Washington?

    Lake Washington touches Seattle, Mercer Island, Kirkland, Medina and Bellevue in King County, Washington.

    Share a tip or fishing report

    Know Lake Washington? Tell us about the launch, parking, where they're biting or anything a first-time visitor should know. Tips go privately to the LakeRipple editor; nothing is posted automatically. Helpful tips may be featured on this page (we'll use your first name only if you give one).

    Lakes & ponds nearby

    Straight-line distance between lake centers. All Washington lakes & ponds · All waters in Seattle