Belourt Outlet Lake
Rolette County, WisconsinEutrophic
Belourt Outlet Lake is a 827-acre productive, nutrient-rich eutrophic lake in Rolette County, ND. Water quality is graded D based on 2 sampling years through 2025. Compared to the 13 other monitored lakes in Rolette County, Belourt Outlet Lake ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2025-09-16. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 3 ft of visibility. Chlorophyll-a: 12.5 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 12.5 µg/L | C |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 827 acres |
Location
County Ranking
Ranked #9 of 14 lakes in Rolette County
Cleaner Lakes Within 30 Miles
Belourt Outlet Lake holds Grade D. 2 nearby lakes hold higher grades.
- BGordon Center LakeRolette County · 3.8 mi · Two grade letters higher (D → B)
- BWheaton LakeRolette County · 3.9 mi · Two grade letters higher (D → B)
Nearby Lakes in Rolette County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Belourt Outlet Lake 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 (0.06 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-09-16
Monitoring stations: 1