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Two Inlets Lake has a higher water quality grade (A, Excellent) than Straight Lake (C, Fair). Both are in Becker County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Straight Lake and Two Inlets 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 meaningfully apart: Two Inlets Lake grades a A while Straight Lake grades a C. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.

For a recreational visitor, the wider grade gap is decisive — Two Inlets Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

C

Straight Lake

Becker County, Minnesota

Moderate clarity, visible to about 8 ft.

A

Two Inlets Lake

Becker County, Minnesota

Moderate clarity, visible to about 9 ft.

Side-by-Side Metrics

MetricStraight LakeTwo Inlets Lake
Overall GradeC (Fair)A (Excellent) Better
Water Clarity8 ft9 ft Better
Phosphorus14.5 µg/L Better15.5 µg/L
Chlorophyll-a (Algae)9.4 µg/L6.3 µg/L Better
Maximum Depth63 ft Better60 ft
Surface Area471 acres578 acres
Public AccessYesYes
Fish Species1515
Trophic Statemesotrophicmesotrophic

A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.

Verdict

Two Inlets Lake wins on overall water quality with a Grade A versus Straight Lake's Grade C. Water clarity: 9 ft vs 8 ft. For fishing diversity, Two Inlets Lake also leads with 15 species.

Source: EPA National Aquatic Resource Surveys, 2026.