Sandy Lake
Marquette County, Wisconsin8 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Sandy Lake. Here is what has been measured.
- 12 ft max depth
- Limited data
Sandy Lake in Marquette County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 8 ft visibility. Maximum depth: 12 ft. Surface area: 8 acres.
Sandy Lake is a 8-acre lake in Marquette County, Wisconsin with a maximum depth of 12 feet. The lake supports 2 documented fish species including Panfish and Largemouth Bass.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-07-06. 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 Sandy 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 Sandy Lake
These are the measurements Wisconsin DNR publishes for Sandy 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 8 ft. TSI 47.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading 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. | 47 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Lake Details
Max depth
12 ft
Surface area
8 acres
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Fish Species
Click a species to see every lake where it is documented.
Fishing Sandy Lake
Water Quality Trend: Stable
Based on 7 years of monitoring (2020–2026).
Water clarity
Stable7 years
Nearby Lakes in Marquette County
Frequently asked questions about Sandy Lake
Where is Sandy Lake?
- Sandy Lake is a lake in Marquette County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Sandy Lake?
- Sandy Lake in Marquette County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 8 ft visibility. Maximum depth: 12 ft. Surface area: 8 acres.
Is Sandy Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Sandy Lake?
- Sandy Lake has a maximum depth of 12 feet. The lake covers 8 acres.
What fish are in Sandy Lake?
- Fish species found in Sandy Lake include Panfish, Largemouth Bass. Sandy Lake is located in Marquette County, Wisconsin.
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Where this data comes from
43 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX43 samples · 2020–2026
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