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C

Westwood Lake

Hennepin County, MinnesotaEutrophic

Westwood Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Among the 95 graded lakes in Hennepin County, Westwood Lake ranks 19 — in the top quartile locally.

No invasive species are currently listed at Westwood Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Westwood Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2021-09-07. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 3.9 ft. Phosphorus level: 24 µg/L. Trophic State Index: 54.

MetricValueGrade
Water Clarity (Secchi Depth)3.9 ftD
Phosphorus24 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)54Eutrophic

High nutrients, frequent algae, reduced clarity

Location

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County Ranking

Ranked #19 of 95 lakes in Hennepin County

Cleaner Lakes Within 30 Miles

Westwood Lake holds Grade C. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Hennepin County

State Parks Near Westwood Lake

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Westwood Lake. 1 report on file.

EPA Impairment Status

Westwood Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Nutrients (phosphorus, nitrogen)

Source: EPA ATTAINS assessment unit MN27-0082-00 · Official waterbody report · Matched by proximity (1.84 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Most recent sample: 2021-09-07

Monitoring stations: 1