Lake Miami Max Depth
Monroe County, WisconsinHypereutrophic
Lake Miami Max Depth is a 140-acre highly nutrient-loaded hypereutrophic lake in Monroe County, IA. Water quality is graded F based on 2 sampling years through 2024.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-17. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.3 ft of visibility. Chlorophyll-a: 58.6 µg/L. Trophic State Index: 72.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.3 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 58.6 µg/L | F |
| Trophic State Index (TSI) | 72 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 140 acres |
Location
County Ranking
Ranked #1 of 1 lakes in Monroe County
Cleaner Lakes Within 30 Miles
Lake Miami Max Depth holds Grade F. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Monroe County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
Hypereutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Lake Miami Max Depth is a man-made reservoir impounded by the Lake Miami Dam (completed 1966), built primarily for recreation on the TR-BLUFF CREEK; earth-type dam, 32 ft tall and 1,178 ft long.
- Surface area
- 140 ac
- Normal storage
- 1,720 ac-ft
- Max storage
- 2,300 ac-ft
- Drainage area
- 6.09 sq mi
- Hazard class
- Significant
- Owner
- Iowa Department of Natural Resources
Source: USACE National Inventory of Dams, NID ID IA00807 · Operator website · Matched by proximity (0.12 km)
EPA Impairment Status
Lake Miami Max Depth is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit IA 04-LDM-1016 · Official waterbody report · Matched by proximity (0.82 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-17
Monitoring stations: 1