Lake Whatcom
Whatcom County, Washington4,919 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
- 361 ft max depth
- Public access
Lake Whatcom in Whatcom County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 360.9 ft. Surface area: 4919 acres.
Lake Whatcom is a 4,919-acre lake in Whatcom County, Washington with a maximum depth of 361 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, WA Ecology. Methodology: how these readings are compared.
What Lake Whatcom is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Deep water360.9 ft surveyed max depth
- Big water4,919 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Whatcom is safe to swim in today is a call for the Washington State Department of Ecology and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Whatcom
These are the measurements Washington Ecology publishes for Lake Whatcom, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Lake Whatcom
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
360.9 ft
Surface area
4,919 acres
Shoreline
30.1 mi
Public access
Yes
Listed by Washington Ecology
Recreation & Access
- Sudden Valley R.V. Park and CampgroundPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lake Whatcom
Compare lakeside cabins, hotels, and vacation rentals near Lake Whatcom in Whatcom County, Washington — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
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Fishing Lake Whatcom
Nearby Lakes in Whatcom County
Frequently asked questions about Lake Whatcom
Where is Lake Whatcom?
- Lake Whatcom is a lake in Whatcom County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Lake Whatcom?
- Lake Whatcom in Whatcom County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 360.9 ft. Surface area: 4919 acres.
Is Lake Whatcom safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Whatcom?
- Lake Whatcom has a maximum depth of 360.9 feet. The lake covers 4919 acres.
Are there boat ramps on Lake Whatcom?
- Lake Whatcom has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Sudden Valley R.V. Park and Campground. Public access is listed as yes.
Can I fish at Lake Whatcom?
- Lake Whatcom has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Washington's fish and wildlife agency, so check its current regulations before you go.
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Where this data comes from
Measurements for Lake Whatcom come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory