Sioux Lake
Sioux Lake in Itasca County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 71 acres.
Minnesota DNR surveys at Sioux Lake average 1.78 northern pike per unit of sampling effort (CPUE) across 2 surveys. The most recent is a Standard Survey dated August 19, 2002. Length samples in the latest survey that recorded them ran 13–26 inches. DNR survey details →
- Area
- 71 acres
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Why Sioux Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Sioux Lake, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Sioux Lake is a 71-acre lake in Itasca County, Minnesota.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Sioux Lake water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Sioux Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Sioux Lake
Compare lakeside cabins, hotels, and vacation rentals near Sioux Lake in Itasca County, Minnesota — 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 Sioux Lake
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Minnesota DNR surveys at Sioux Lake average 1.78 northern pike per unit of sampling effort (CPUE) across 2 surveys. The most recent is a Standard Survey dated August 19, 2002. Length samples in the latest survey that recorded them ran 13–26 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Sioux Lake — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
2 surveys on file from MN DNR Fisheries. Most recent: 2002-08-19 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Brown Bullhead | 10.95 | 0.51 lb |
| Black Bullhead | 10.72 | 0.47 lb |
| Yellow Perch | 9.54 | 0.28 lb |
| Yellow Bass | 3.17 | 0.41 lb |
| Pumpkinseed | 1.82 | 0.26 lb |
| Northern Pike | 1.78 | 1.39 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE means more abundant in standardized sampling. This is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Brown Bullhead
Black Bullhead
Yellow Perch
Yellow Bass
From the 2002-08-19 survey
Sioux Lake is a small panfish lake located in the northwest part of Itasca County about 5 miles southwest of Squaw Lake, MN. The access is very poor with little parking available. The entire shoreline of the lake has a fringe of wild rice. Northern pike were not abundant in the assessment and most were small. The…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Sioux Lake. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — SiouxFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Sioux (0836)Aquatic Plant Report · MN DNR LakeFinder
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 71 acres |
No bathymetric survey has been published for Sioux Lake, so its depth is not documented here.
Fishing Sioux Lake
Nearby Lakes in Itasca County
Frequently asked questions about Sioux Lake
Where is Sioux Lake?
- Sioux Lake is a lake in Itasca County, Minnesota. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Sioux Lake?
- Sioux Lake in Itasca County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 71 acres.
Is Sioux Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Sioux Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What did the DNR fisheries survey find at Sioux Lake?
- Minnesota DNR surveys at Sioux Lake average 1.78 northern pike per unit of sampling effort (CPUE) across 2 surveys. The most recent is a Standard Survey dated August 19, 2002. Length samples in the latest survey that recorded them ran 13–26 inches. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Sioux Lake — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
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Where this data comes from
Measurements for Sioux Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Lake details from Minnesota DNR LakeFinder