Skip to main content
LakeQuality
C

Cut Foot Sioux Lake

Itasca County, MinnesotaMesotrophic

Cut Foot Sioux Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. 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. Cut Foot Sioux Lake sits at rank 100 of 141 in Itasca County, in the lower half of the local distribution.

Zebra mussels have been documented at Cut Foot Sioux Lake, which alters the filter-feeding balance and can paradoxically increase water clarity while disrupting the food web. The state fisheries records do not list documented species for Cut Foot Sioux Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at Cut Foot Sioux Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. 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 2025-10-14. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

Track Cut Foot Sioux Lake

Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 8.5 ft. Phosphorus level: 30 µg/L. Chlorophyll-a: 6.2 µg/L. Trophic State Index: 49.

MetricValueGrade
Water Clarity (Secchi Depth)8.5 ftC
Phosphorus30 µg/LC
Chlorophyll-a (Algae)6.2 µg/LB
Trophic State Index (TSI)49Mesotrophic

Moderate nutrients, good water quality

Invasive & Introduced Species

Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.

faucet snailzebra mussel

Water Quality Trend: Improving

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+1.82 m/yr2
Chlorophyll-a Improving-4.3 µg/L/yr2

Location

Loading map…

County Ranking

Ranked #100 of 141 lakes in Itasca County

Cleaner Lakes Within 30 Miles

Cut Foot Sioux Lake holds Grade C. 3 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Itasca County

State Parks Near Cut Foot Sioux Lake

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Cut Foot Sioux 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: 2025-10-14

Monitoring stations: 3