Lower Sioux Hank Lake
Redwood County, MinnesotaView mapDirections
Minnesota PCA publishes the water-quality measurements for Lower Sioux Hank Lake. Here is what has been measured.
- Public access
- Limited data
Lower Sioux Hank Lake in Redwood County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Phosphorus: 300 µg/L.
Lower Sioux Hank Lake is a lake in Redwood County, Minnesota. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-10-01. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lower Sioux Hank Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lower Sioux Hank Lake
These are the measurements Minnesota PCA publishes for Lower Sioux Hank Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 300 µg/L. TSI 86.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 300µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 86 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Lower Sioux Hank Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Lower Sioux Hank Lake
Compare lakeside cabins, hotels, and vacation rentals near Lower Sioux Hank Lake in Redwood 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 Lower Sioux Hank Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
Follow Lower Sioux Hank Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lower Sioux Hank Lake
Water quality readings over time
2 seasons of samples on record (2022–2025). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Worsening+99.27 µg/L/yr2 years
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Lower Sioux Hank Lake under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Morton WwtpMorton · 0.9 mi away · NPDES MN0051292Recent violation
- Lower Sioux WwslRedwood Falls · 1.5 mi away · NPDES MN0061433Recent violation
- Redwood Falls Kaolin MineRedwood County · 3.8 mi away · NPDES MN0059331
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Redwood County
Frequently asked questions about Lower Sioux Hank Lake
Where is Lower Sioux Hank Lake?
- Lower Sioux Hank Lake is a lake in Redwood County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Lower Sioux Hank Lake?
- Lower Sioux Hank Lake in Redwood County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Phosphorus: 300 µg/L.
Is Lower Sioux Hank Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Lower Sioux Hank Lake?
- Public access to Lower Sioux Hank Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Lower Sioux Hank Lake across LakeQuality
Fish species and the cleanest lakes across Minnesota
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its readings
Lakes in the Minnesota River Watershed, ranked by water quality
Minnesota's cleanest lakes, ranked on agency measurements
More lakes in Minnesota
State Parks Near Lower Sioux Hank Lake
Other Lakes in Minnesota
Hypereutrophic Lakes in Minnesota
Where this data comes from
4 measurements from 1 monitoring station, 2022–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Lower Sioux Indian Community (Tribal)
LSIOUX_WQX4 samples · 2022–2025
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)