Little Blake Lake
Little Blake Lake in Polk County, Wisconsin has a water quality grade of D (Nutrient-rich). Water clarity: 3.5 ft visibility. Phosphorus: 43.8 µg/L. Maximum depth: 14 ft. Surface area: 78 acres.
- Clarity
- 3.5 ft
- Max depth
- 14 ft
- Area
- 78 acres
- Type
- Eutrophic
- Trend
- ↑ Improving
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Little Blake Lake →
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Little Blake Lake is a 78-acre productive, nutrient-rich eutrophic lake in Polk County, Wisconsin with a maximum depth of 14 feet. Water quality is graded D based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 54 other monitored lakes in Polk County, Little Blake Lake ranks #51 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-09-08. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyElevated nutrients
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Murky, only visible to about 3.5 ft. Phosphorus level: 43.8 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.5 ft | Not graded |
| Phosphorus | 43.8 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Little Blake Lake
Compare lakeside cabins, hotels, and vacation rentals near Little Blake Lake in Polk County, Wisconsin — 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Little Blake Lake are listed below.
Top-rated places to stay near Little Blake Lake
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2025).
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Little Blake Lake covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2022Big and Little Blake lakes spring shocking survey, 2022Spring Shocking Survey · WI DNR · 2022 (PDF)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 14 ft |
| Surface Area | 78 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Little Blake LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Little Blake Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.446 m/yr | 3 |
| Phosphorus | ↑ Improving | -11.5 µg/L/yr | 3 |
EPA Impairment Status
Little Blake Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5R).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10005033 · Official waterbody report · Matched by proximity (1.51 km)
County Ranking
Ranked #51 of 55 lakes in Polk County
Nearby Lakes With Higher Grades
Little Blake Lake holds Grade D. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Polk County
Frequently asked questions about Little Blake Lake
Where is Little Blake Lake?
- Little Blake Lake is a lake in Polk County, Wisconsin. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Little Blake Lake?
- Little Blake Lake in Polk County, Wisconsin has a water quality grade of D (Nutrient-rich). Water clarity: 3.5 ft visibility. Phosphorus: 43.8 µg/L. Maximum depth: 14 ft. Surface area: 78 acres.
Is Little Blake Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Little Blake Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
How deep is Little Blake Lake?
- Little Blake Lake has a maximum depth of 14 feet. The lake covers 78 acres.
Are there boat ramps on Little Blake Lake?
- Little Blake Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Little Blake Lake. Public access is listed as yes.
Explore Little Blake Lake across LakeQuality
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High nutrients, frequent algae, reduced clarity
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Where this data comes from
20 measurements from 2 monitoring stations, 2022–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX20 samples · 2022–2025
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (2)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory