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LakeQuality

Belcourt Inlet Lake vs Belcourt Lake Beach

Water quality, depth, fish species, and recreation comparison.

Belcourt Inlet Lake has a higher water quality grade (D, Poor) than Belcourt Lake Beach (F, Very Poor). Both are in Rolette County, North Dakota.

Reviewed by LakeQuality Editorial Team · Updated

Belcourt Inlet Lake and Belcourt Lake Beach are both in North Dakota — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. The grades are close: Belcourt Inlet Lake (D) and Belcourt Lake Beach (F) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.

With grades this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.

D

Belcourt Inlet Lake

Rolette County, North Dakota

Very murky, less than 3.3 ft of visibility.

F

Belcourt Lake Beach

Rolette County, North Dakota

Very murky, less than 1 ft of visibility.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricBelcourt Inlet LakeBelcourt Lake Beach
Overall GradeD (Poor)F (Very Poor)
Water Clarity3.3 ft1 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)10.7 µg/LNo data
Maximum Depth24.5 ft24.5 ft
Surface Area634.6 acres827 acres
Public AccessUnknownUnknown
Fish Species33
Trophic Stateeutrophichypereutrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Belcourt Inlet Lake wins on overall water quality with a Grade D versus Belcourt Lake Beach's Grade F. Water clarity: 3.3 ft vs 1 ft. For fishing diversity, Belcourt Inlet Lake also leads with 3 species.