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LakeQuality
C

Jaskari Lake

Carlton County, MinnesotaEutrophic

Jaskari 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.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. 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. Jaskari Lake ranks 16 of 33 in Carlton County — solidly in the upper half of the local distribution.

No invasive species are currently listed at Jaskari Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Jaskari Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Jaskari Lake — most use is by shoreline residents and their guests. The grade is supported by multiple sampling years from Minnesota PCA volunteers and partner agencies, giving the letter a reasonably stable foundation.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-10. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 6.4 ft. Phosphorus level: 25 µg/L. Chlorophyll-a: 8 µg/L. Trophic State Index: 51.

MetricValueGrade
Water Clarity (Secchi Depth)6.4 ftD
Phosphorus25 µg/LB
Chlorophyll-a (Algae)8 µg/LB
Trophic State Index (TSI)51Eutrophic

High nutrients, frequent algae, reduced clarity

Water Quality Trend: Improving

Based on 6 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.413 m/yr5
Phosphorus Improving-11 µg/L/yr2
Chlorophyll-a Declining+0.69 µg/L/yr6

Location

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County Ranking

Ranked #16 of 33 lakes in Carlton County

Nearby Lakes in Carlton County

DNR Reports & Resources

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

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2024-10-10

Monitoring stations: 1