Posey Lake Central Basin; Hudson Township
Lenawee County, WisconsinEutrophic
Posey Lake Central Basin; Hudson Township is a 150-acre productive, nutrient-rich eutrophic lake in Lenawee County, MI. Water quality is graded C based on 2 sampling years through 2023. The lake supports 7 documented fish species including Bluegill, Common carp, and Golden redhorse. Compared to the 7 other monitored lakes in Lenawee County, Posey Lake Central Basin; Hudson Township ranks #7 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
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 5 ft. Chlorophyll-a: 8.6 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 8.6 µg/L | B |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 150 acres |
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Posey Lake Central Basin; Hudson Township (14-day solunar calendar)
→ Is it safe to eat fish from Posey Lake Central Basin; Hudson Township? (mercury & PFAS guide)
→ Posey Lake Central Basin; Hudson Township fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #7 of 8 lakes in Lenawee County
Cleaner Lakes Within 30 Miles
Posey Lake Central Basin; Hudson Township holds Grade C. 2 nearby lakes hold higher grades.
- ARound Lake Central BasinLenawee County · 4.8 mi · Two grade letters higher (C → A)
- ADevils Lake Central Basin NorthLenawee County · 6.3 mi · Two grade letters higher (C → A)
Nearby Lakes in Lenawee County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Cass County · Clarity: 7 ft
Leelanau County · Clarity: 9.5 ft
Iosco County · Clarity: 5.5 ft
Muskegon County · Clarity: 6.8 ft
Gladwin County · Clarity: 9 ft
Montmorency County · Clarity: 9 ft
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Posey Lake Central Basin; Hudson Township is a man-made reservoir impounded by the Posey Lake Level Control Structure (completed 1955), built primarily for recreation on the Posey Lake Drain; gravity-type dam, 7 ft tall and 15 ft long.
- Surface area
- 150 ac
- Normal storage
- 190 ac-ft
- Max storage
- 715 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Low
- Owner
- Lenawee County Drain Commissioner
Source: USACE National Inventory of Dams, NID ID MI02265 · Operator website · Matched by proximity (0.58 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