Little Pine Lake
Iron County, Wisconsin18 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Little Pine Lake. Here is what has been measured.
- Mesotrophic
- 32 ft max depth
Little Pine Lake in Iron County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 7.4 ft visibility. Phosphorus: 13.3 µg/L. Maximum depth: 32 ft. Surface area: 18 acres.
Little Pine Lake is a 18-acre mesotrophic lake in Iron County, Wisconsin with a maximum depth of 32 feet. Overall water quality is declining over recent sampling years. Compared to the 15 other monitored lakes in Iron County, Little Pine Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2022-08-29. Methodology: how these readings are compared.
What Little Pine Lake is good for
From access and monitoring records, not editorial picks.
- Deep water32 ft surveyed max depth
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Little Pine Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Little Pine Lake
These are the measurements Wisconsin DNR publishes for Little Pine Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 7.4 ft. Phosphorus 13.3 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 7.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 13.3µg/L | Good GoodFairPoor |
| 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. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Little Pine Lake
Answers come straight from the public measurements and survey records on this page.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2022).
Lake Details
Max depth
32 ft
Surface area
18 acres
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Fishing Little Pine Lake
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Stable+0.06 µg/L/yr6 years
Nearby Lakes in Iron County
Frequently asked questions about Little Pine Lake
Where is Little Pine Lake?
- Little Pine Lake is a lake in Iron County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Little Pine Lake?
- Little Pine Lake in Iron County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 7.4 ft visibility. Phosphorus: 13.3 µg/L. Maximum depth: 32 ft. Surface area: 18 acres.
Is Little Pine Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Little Pine Lake?
- Little Pine Lake has a maximum depth of 32 feet. The lake covers 18 acres.
Explore Little Pine Lake across LakeQuality
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Where this data comes from
27 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX27 samples · 2020–2022
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
Fish and recreation data from Wisconsin DNR Lakes