Belcourt Lake Beach
Rolette County, WisconsinLimited DataHypereutrophic
Belcourt Lake Beach is a 827-acre highly nutrient-loaded hypereutrophic lake in Rolette County, ND. Water quality is graded F based on 1 sampling years through 2025. Compared to the 13 other monitored lakes in Rolette County, Belcourt Lake Beach ranks #14 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2025-09-10. 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 ft of visibility. Trophic State Index: 77.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 77 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 827 acres |
Location
County Ranking
Ranked #14 of 14 lakes in Rolette County
Cleaner Lakes Within 30 Miles
Belcourt Lake Beach holds Grade F. 5 nearby lakes hold higher grades.
- BGordon Center LakeRolette County · 3.8 mi · Two grade letters higher (F → B)
- BWheaton LakeRolette County · 3.9 mi · Two grade letters higher (F → B)
- DBelourt Outlet LakeRolette County · 0.1 mi · Higher grade (F → D)
- DBelcourt Center LakeRolette County · 0.8 mi · Higher grade (F → D)
- DBelcourt Inlet LakeRolette County · 1.3 mi · Higher grade (F → D)
Nearby Lakes in Rolette County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
Hypereutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Belcourt Lake Beach is a man-made reservoir impounded by the Belcourt Lake (completed 1930), built primarily for recreation on the Ox Creek; earth-type dam, 13 ft tall and 700 ft long.
- Surface area
- 827 ac
- Normal storage
- 5,651 ac-ft
- Max storage
- 9,159 ac-ft
- Drainage area
- 28.4 sq mi
- Hazard class
- High
- Owner
- BIA
All listed purposes: Recreation;Fish and Wildlife Pond;Water Supply.
Source: USACE National Inventory of Dams, NID ID ND00535 · Operator website · Matched by proximity (0.13 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-09-10
Monitoring stations: 1