Sugarloaf Lake; Lyndon Twp
Washtenaw County, WisconsinMesotrophic
Sugarloaf Lake; Lyndon Twp is a 280-acre mesotrophic lake in Washtenaw County, MI. Water quality is graded B based on 2 sampling years through 2023. The lake supports 2 documented fish species including Northern pike and Spotted gar. Compared to the 16 other monitored lakes in Washtenaw County, Sugarloaf Lake; Lyndon Twp ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-09-24. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 9.5 ft. Chlorophyll-a: 1.9 µg/L. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.5 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 1.9 µg/L | A |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 280 acres |
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Sugarloaf Lake; Lyndon Twp (14-day solunar calendar)
→ Is it safe to eat fish from Sugarloaf Lake; Lyndon Twp? (mercury & PFAS guide)
→ Sugarloaf Lake; Lyndon Twp fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #9 of 17 lakes in Washtenaw County
Cleaner Lakes Within 30 Miles
Sugarloaf Lake; Lyndon Twp holds Grade B. 3 nearby lakes hold higher grades.
- AClear Lake East Basin; Waterloo TownshipJackson County · 1.7 mi · Higher grade (B → A)
- ANorth Lake North Central Basin; Dexter TownshipWashtenaw County · 6.5 mi · Higher grade (B → A)
- ASilver LakeWashtenaw County · 9.6 mi · Higher grade (B → A)
Nearby Lakes in Washtenaw County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Lapeer County · Clarity: 9.5 ft
Livingston County · Clarity: 13 ft
Manistee County · Clarity: 11 ft
Lake County · Clarity: 14 ft
Cass County · Clarity: 10.5 ft
Genesee County · Clarity: 10 ft
Mesotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Sugarloaf Lake; Lyndon Twp is a man-made reservoir impounded by the Winnewana Dam (completed 1956), built primarily for recreation on the Tributary to Portage River; earth-type dam, 12 ft tall and 270 ft long.
- Surface area
- 280 ac
- Normal storage
- 1,000 ac-ft
- Max storage
- 1,560 ac-ft
- Drainage area
- 1.8 sq mi
- Hazard class
- Significant
- Owner
- MDNR Parks & Recreation
Source: USACE National Inventory of Dams, NID ID MI00327 · Operator website · Matched by proximity (0.8 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-09-24
Monitoring stations: 1