What is the water quality grade for Smith Lake?

Smith Lake in Sawyer County, Wisconsin received a water quality grade of D (Poor). Water clarity: 6 ft visibility. Maximum depth: 29 ft. Surface area: 326 acres.

Is Smith Lake safe to swim in?

Swimming not recommended, poor water quality with high algae risk. Smith Lake has an overall water quality grade of D. Always check local health department advisories before swimming.

How deep is Smith Lake?

Smith Lake has a maximum depth of 29 feet. The lake covers 326 acres.

What fish are in Smith Lake?

Fish species found in Smith Lake include Panfish, Largemouth Bass, Northern Pike, Walleye. Smith Lake is located in Sawyer County, Wisconsin.

Smith Lake

Sawyer County, WisconsinLimited DataEutrophic

On the scoring rubric Smith Lake grades a D: clarity at 6.0 ft and phosphorus readings still being added keep it in the lower bracket for Sawyer County.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. The lake bottoms out at 29 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. At 326 acres, Smith Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Smith Lake ranks 47 of 50 in Sawyer County — at the lower end of the locally monitored distribution.

Smith Lake has at least one documented invasive species (Banded Mystery Snail), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. Walleye are documented at Smith Lake, one of 4 fish species on record for the lake. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2021-06-13. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated May 31, 2026