Where is Blackmans Lake?

Blackmans Lake is a lake in Snohomish County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.

How deep is Blackmans Lake?

Blackmans Lake has a maximum depth of 25 feet and an average depth of 14 feet. The lake covers 61 acres.

Are there boat ramps on Blackmans Lake?

Blackmans Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Blackmans Lake. Public access is listed as yes.

Can I fish at Blackmans Lake?

Blackmans Lake 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.

Blackmans Lake

Snohomish County, Washington61 acresView map Directions

No nutrient or algae sampling on record from Washington Ecology for this lake.

Max depth

25 ft

Bathymetric survey

Area

61 acres

Surface area

Shoreline

1.5 mi

Measured length

Impaired · Pathogens (E. coli, fecal)
25 ft max depth
Public access

See the measurements Directions Where to stay

Blackmans Lake in Snohomish County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 25 ft. Surface area: 61 acres.

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Blackmans Lake is a 61-acre lake in Snohomish County, Washington with a maximum depth of 25 feet (14-foot average). 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 Blackmans Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Bacteria advisory

Nutrient and algae readings are not a swimming clearance. Blackmans Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pathogens (E. coli, fecal). Check local advisories before you swim.

Whether Blackmans Lake 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.

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Water quality measurements for Blackmans Lake

These are the measurements Washington Ecology publishes for Blackmans Lake, 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 Blackmans Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

25 ft

Average depth

14 ft

Surface area

61 acres

Shoreline

1.5 mi

Public access

Yes

Listed by Washington Ecology

Recreation & Access

Boat Landings

Yes

Public Access

Blackmans LakePublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

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Stays near Blackmans Lake

Compare lakeside cabins, hotels, and vacation rentals near Blackmans Lake in Snohomish 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.

Top-rated places to stay near Blackmans Lake

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Fishing Blackmans Lake

→ Blackmans Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Blackmans Lake is officially listed as impaired under Clean Water Act §303(d) in the 2018 EPA reporting cycle (IR category 5).

Causes of impairment

Pathogens (E. coli, fecal)

Designated uses not supporting: Recreation.

Source: EPA ATTAINS assessment unit WA17110011000469_001_001 · Official waterbody report

Nearby Lakes in Snohomish County

Hanson Slough2.4 miView →Lake Stevens4.8 miView →Lake Beecher5.6 ft clear6 miView →Panther Lake4.2 miView →Flowing Lake4.9 miView →Lake Cassidy—View →

Frequently asked questions about Blackmans Lake

Where is Blackmans Lake?: Blackmans Lake is a lake in Snohomish County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Blackmans Lake?: Blackmans Lake in Snohomish County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Maximum depth: 25 ft. Surface area: 61 acres.
Is Blackmans Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Blackmans Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pathogens (E. coli, fecal). Check local advisories before you swim.
How deep is Blackmans Lake?: Blackmans Lake has a maximum depth of 25 feet and an average depth of 14 feet. The lake covers 61 acres.
Are there boat ramps on Blackmans Lake?: Blackmans Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Blackmans Lake. Public access is listed as yes.
Can I fish at Blackmans Lake?: Blackmans Lake 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.