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LakeQuality

Julia Lake vs Turtle Lake

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

Julia Lake and Turtle Lake both received the same overall water quality grade of B (Good). Both are in Beltrami County, Minnesota.

Julia Lake and Turtle Lake are both in Minnesota — 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: Julia Lake (B) and Turtle Lake (B) 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.

B

Julia Lake

Beltrami County, Minnesota

Moderate clarity, visible to about 7.4 ft.

B

Turtle Lake

Beltrami County, Minnesota

Moderate clarity, visible to about 9.5 ft.

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.

MetricJulia LakeTurtle Lake
Overall GradeB (Good)B (Good)
Water Clarity7.4 ft9.5 ft
Phosphorus17.5 µg/L14 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth43 ft45 ft
Surface Area511.26 acres1.6K acres
Public AccessYesYes
Fish Species11
Trophic Statemesotrophicmesotrophic

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

Verdict

Both lakes earn the same Grade B. The tiebreakers come down to clarity (Julia Lake: 7.4 ft, Turtle Lake: 9.5 ft) and what you want from the lake. Julia Lake matches its peer on species count.