Custer Mine Pond
McLean County, WisconsinEutrophic
Custer Mine Pond is a 11-acre productive, nutrient-rich eutrophic lake in McLean County, ND. Water quality is graded C based on 2 sampling years through 2024. Compared to the 2 other monitored lakes in McLean County, Custer Mine Pond ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-10-08. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 2.2 ft of visibility. Chlorophyll-a: 3.3 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.2 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 3.3 µg/L | A |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 10.7 acres |
Location
County Ranking
Ranked #3 of 3 lakes in McLean County
Cleaner Lakes Within 30 Miles
Custer Mine Pond holds Grade C. 5 nearby lakes hold higher grades.
- AGarlk1390a LakeMercer County · 9.6 mi · Two grade letters higher (C → A)
- AQacmainstfbk LakeMercer County · 9.9 mi · Two grade letters higher (C → A)
- BGarlk1412dw LakeMercer County · 22.4 mi · Higher grade (C → B)
- BQacmainstdup LakeMercer County · 9.9 mi · Higher grade (C → B)
- BVelva Sportsmans Dam LakeWard County · 26.6 mi · Higher grade (C → B)
Nearby Lakes in McLean County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Custer Mine Pond is a man-made reservoir impounded by the De Trobriand Gma 1 (completed 1986), built primarily for fish and wildlife pond on the Lake Sakakawea-TR; earth-type dam, 17 ft tall and 265 ft long.
- Surface area
- 10.7 ac
- Normal storage
- 55.8 ac-ft
- Max storage
- 55.8 ac-ft
- Drainage area
- 1.89 sq mi
- Hazard class
- Low
- Owner
- US Corps Of Engineers
Source: USACE National Inventory of Dams, NID ID ND00427 · Operator website · Matched by proximity (0.77 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-10-08
Monitoring stations: 1