Silver Lake
Walworth County, WisconsinLimited DataMesotrophic
Silver Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.
Mesotrophic conditions dominate at Silver Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. At 85 acres, Silver Lake sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Within the 34 graded lakes of Walworth County, Silver Lake sits at rank 26, near the bottom of the county list.
Eurasian watermilfoil has been documented at Silver Lake, requiring shoreline management to keep dense mats from crowding native vegetation. The state fisheries records do not list documented species for Silver Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at Silver Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. 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 2023-08-15. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 9.8 ft. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.8 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 85 acres |
| Public Access | Yes |
Invasive Species
Water Quality Trend: ↓ Declining
Based on 2 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 #26 of 34 lakes in Walworth County
Nearby Lakes in Walworth County
More Wisconsin Lake Rankings
State Parks Near Silver Lake
Other Grade C Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2023).
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: 2023-08-15
Monitoring stations: 1