Seattle · Mercer Island · Kirkland · Medina · Bellevue, Washington — King County.
Surface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 148900411).
The red circle marks Lake Washington.
Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline (Washington: incorporated places touching the lake, otherwise the nearest one).
Official WDFW pages. Rules and fees change; check before you go.
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.
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.
Numbers on the map match the list at rightbelow.
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.
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.
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.
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.
Electric hookups · RVs welcome · Showers · Toilets
Electric hookups · RVs welcome · Dump station · Wi-Fi
RVs welcome
Tent sites · Toilets · Drinking water
Electric hookups · RVs welcome · Toilets
Electric hookups · RVs welcome
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.
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.
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.
25 public access sites listed, 25 with a boat ramp or trailer launch.
| Site | Town | Owner | Type | Parking | Fee | Uses | Map |
|---|---|---|---|---|---|---|---|
| Adams Street Boat Ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5655, -122.2671 |
| Atlantic City Boat Ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5229, -122.2632 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5712, -122.2768 |
| Boat ramp | Mercer Island | — | Boat ramp (OpenStreetMap) · Yes ramp | — | Fee | Boating | 47.5779, -122.2019 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | No fee | Boating | 47.6426, -122.2899 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.6769, -122.2499 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | No fee | Boating | 47.5905, -122.2859 |
| Boat ramp | Mercer Island | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5245, -122.2261 |
| Boat ramp | Mercer Island | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5851, -122.2535 |
| Boat ramp | Bellevue | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5975, -122.2104 |
| Boat ramp | Renton | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5055, -122.2021 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.6880, -122.2633 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.6878, -122.2618 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | No fee | Boating | 47.6553, -122.2968 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.6476, -122.3000 |
| Boat ramp | — | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5016, -122.2201 |
| Boat ramp | — | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5007, -122.2193 |
| Boat ramp | Beaux Arts Village | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5865, -122.2057 |
| Boat ramp | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.6891, -122.2646 |
| Boat ramp | Kirkland | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.7018, -122.2239 |
| Boat ramp | Mercer Island | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5274, -122.2221 |
| Ferdinand Street Boat Launch | Seattle | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.5573, -122.2615 |
| Marina Park Boat Ramp | Kirkland | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.6756, -122.2096 |
| Northeast 42nd Street Boat Ramp | Yarrow Point | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 47.6474, -122.2216 |
| SE 40th Boat Launch | Bellevue | — | Boat ramp (OpenStreetMap) · Yes ramp | — | No fee | Boating | 47.5749, -122.1889 |
WDFW water access sites and OpenStreetMap boat ramps (ODbL)
Fees, hours and rules change; confirm with the site owner before you go.
On OpenStreetMap: 18 beaches and swimming spots on the shore of Lake Washington not marked private, residents-only or members-only.
| Beach | Type | Access | Directions |
|---|---|---|---|
| North Beach | Beach | Access not tagged; check posted rules | Get directions |
| Mercerwood Shore Club beach | Beach | Access not tagged; check posted rules | Get directions |
| Magnuson Park Beach | Beach | Public access | Get directions |
| Kennydale Beach | Beach | Access not tagged; check posted rules | Get directions |
| Matthews Beach | Beach | Access not tagged; check posted rules | Get directions |
| Mount Baker Beach | Beach | Access not tagged; check posted rules; hours: Mo-Fr 12:00-19:00, Sa-Su 11:00-19:00 | Get directions |
| Madison Park Beach | Beach | Access not tagged; check posted rules | Get directions |
| Calkins Point | Beach | Access not tagged; check posted rules | Get directions |
| Lake City Beach Park | Beach | Public access | Get directions |
| Pritchard Island Beach | Beach | Access not tagged; check posted rules | Get directions |
| East Harrison Street End | Beach | Access not tagged; check posted rules | Get directions |
| Road End Beach | Beach | Access not tagged; check posted rules | Get directions |
| Rumford Beach | Beach | Access not tagged; check posted rules; run by City of Seattle; hours: Mo-Su 09:00-21:00 | Get directions |
| Beach (unnamed on OpenStreetMap) | Beach | Public access; no fee; lifeguards (seasonal) | Get directions |
| Beach (unnamed on OpenStreetMap) | Beach | Access not tagged; check posted rules | Get directions |
| Beach (unnamed on OpenStreetMap) | Beach | Public access; no fee | Get directions |
| Beach (unnamed on OpenStreetMap) | Beach | Access not tagged; check posted rules | Get directions |
| Beach (unnamed on OpenStreetMap) | Swimming spot | Public access | Get 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.
Reported on or near Lake Washington
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.
Lake Washington covers about 21,992 acres in Seattle, Mercer Island, Kirkland and Medina, Washington (King County).
WDFW fish stocking records lists Rainbow trout, Chinook salmon and Coho salmon.
Yes. 25 public trailer launches are listed: Boat ramp, Boat ramp and SE 40th Boat Launch. Check posted fees and parking rules.
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.
Yes. We list 35 campgrounds and RV parks within 15 miles, 2 of them within 5 miles.
Lake Washington touches Seattle, Mercer Island, Kirkland, Medina and Bellevue in King County, Washington.
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).
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