Wazee Lake
Jackson County, WisconsinOligotrophic
Wazee Lake sits at the top of the Wisconsin DNR grading rubric with an A, a mark reached by the cleanest lakes in Wisconsin. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.
Trophically, Wazee Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. At 350 ft of maximum depth, Wazee Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. At 146 acres, Wazee Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Among the 4 graded lakes in Jackson County, Wazee Lake sits at rank 2, above the county median.
Eurasian watermilfoil is established at Wazee Lake, which can dampen recreational access and pressure the native plant community. The state fisheries records do not list documented species for Wazee Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. Public access is available — the lake is on the Wisconsin DNR public-access list. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2022-06-22. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 105.8 ft down. Phosphorus level: 9.3 µg/L. Trophic State Index: 23.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 105.8 ft | A |
| Phosphorus | 9.3 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 23 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 350 ft |
| Surface Area | 146 acres |
| Public Access | Yes |
Invasive Species
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -1.5 m/yr | 2 |
Recreation & Access
Location
County Ranking
Ranked #2 of 4 lakes in Jackson County
Nearby Lakes in Jackson County
More Wisconsin Lake Rankings
Other Grade A Lakes in Wisconsin
Waukesha County · Clarity: 14.6 ft
Waukesha County · Clarity: 13.8 ft
Walworth County · Clarity: 19 ft
Washington County · Clarity: 12 ft
Kenosha County · Clarity: 10.1 ft
Washington County · Clarity: 12.5 ft
Oligotrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2025).
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Fish and recreation data from Wisconsin DNR Lakes
Most recent sample: 2022-06-22
Monitoring stations: 1