Lake · Washington

Mason Lake

60 m197 ft

Area: 3.94 km²
Tonight: 35°FPartly cloudy · Wind 2 mph E

Mason Lake is a lake at 60 m above sea level in Washington, United States, 3.94 km² in area and 6.5 km long.

All facts

Surface elevation: 60 m
Length: 6.5 km
Shoreline: 18.2 km

Open the 3D view

Lake

Mason Lake in numbers

Shoreline from OpenStreetMap.

Shoreline: 18.2 km≈4½ h to walk around

3D map

Mason Lake 3D map

Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 8.5 × 8.5 km

Surface

Vertical scale

Topographic map

Mason Lake terrain and contours

10 m contours from the USGS 3DEP 10 m terrain model. Click two points on the map to draw your own cross-section.Tap two points on the map to draw your own cross-section.

Index contours every 50 mShowing west → east through the centre

Mason Lake elevation profile

West → east through the centre

Hover the profile to read elevation and distance.Tap or drag along the profile to read elevation and distance.

Weather

Mason Lake weather

Today · Clear · 35 / 57°F (2 / 14°C) · 4% chance of precipitation · Wind 3 mph ENE

Mason Lake forecast for about 61 m.

Today35°57°4%3 mph ENE
Sat38°54°70%0–3 mph SSW
Sun40°54°77%2–6 mph NE
Mon39°58°26%3 mph NE
Tue38°58°26%0–6 mph SW
Wed37°58°26%3–9 mph ENE
Thu35°59°16%5 mph NE

Forecast data: NOAA National Weather Service, public domain, model run Oct 23, 18:26 UTC.

Camping & parking

Camping & parking near Mason Lake

Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around Mason Lake, nearest first, by straight-line distance. Check access, fees and permits locally.

Nearest parking
3.7 km NE
+2 more within 3.8 km
Directions Map
Nearest campsite
Twanoh State Park Campground
4.7 km NNW · +2 more within 7.9 km
Directions Map
Nearest caravan site
Spencer Lake RV Park
7.1 km S
Directions Map

All mapped places 7

Place	Distance
Parking	3.7 km NE
Parking	3.7 km NE
Parking	3.8 km NE
Twanoh State Park CampgroundCampsite	4.7 km NNW
Cascadia Marine Trail Campsite - TwanohCampsite	4.9 km NNW
Spencer Lake RV ParkCaravan site	7.1 km S
Cascadia Marine Trail Campsite - Jarrell CoveCampsite	7.9 km SE

Slope

Share of the 8.5 × 8.5 km view by steepness, from the 10 m model.

Mostly gentle: 93% of the view is under 15°.

Gentle, 0–15°

93.2%

Moderate, 15–30°

5.7%

Steep, 30–45°

1.1%

Cliffs, 45° and over

0.0%

Steeper than 30°: 1.1% of the 72 km² view
Relief in view: 191 m low point -1 m

Land cover

ESA WorldCover 10 m classification of the same area.

Trees 82.1%Grassland 9.1%Water 8.4%

Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.

Where it sits

Where Mason Lake sits

Nearby

Nearby places

More 1

Green Lake60 km NE

Downloads

Mason Lake downloads: topographic map, heightmap, STL 3D model and DEM

Free files made in your browser from this page's terrain data. No sign-up; credit the sources below.

Print & wall

JPGMason Lake satellite image (JPEG)Sentinel-2 true-colour image of the same area, taken 2026-09-16.

3D printing & 3D apps

GIS & GPS

</>Embed this mapPaste this into your site to show the interactive 3D terrain, with a credit link back here.

<iframe src="https://topolu.com/embed/mason-lake-washington" width="100%" height="480" style="border:0" loading="lazy" allowfullscreen title="3D terrain of Mason Lake"></iframe>
<p><a href="https://topolu.com/mason-lake-washington" rel="nofollow">Topolu</a></p>

Free to use with credit: see the data sources

Sources

Data sources

Terrain: U.S. Geological Survey, 3D Elevation Program (public domain)
Imagery: Contains modified Copernicus Sentinel data 2026 (scene 2026-09-16)
Land cover: © ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium
Facts: Wikidata (CC0)
Forecast: Weather forecast from NOAA National Weather Service (public domain)
Sources: Wikidata · GeoNames · Wikipedia

Mason Lake

West → east through the centre

Nearest parking

Nearest campsite

Nearest caravan site