What is the difference between Deer Lake and North Turtle Lake?

Deer Lake (Otter Tail County) carries readings with 12.3 ft clarity and 26 ft max depth. North Turtle Lake (Otter Tail County) carries readings with 4 ft clarity and 19 ft max depth.

Is Deer Lake or North Turtle Lake better for fishing?

Deer Lake has 16 documented fish species. North Turtle Lake has 12. The lake with more species and better water clarity (Secchi depth) generally supports more diverse and successful fishing.

Deer Lake vs North Turtle Lake, Water Quality Comparison

Deer Lake reads lower on nutrients and algae than North Turtle Lake. Both are in Otter Tail County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated Aug 26, 2026

Deer Lake and North 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. Deer Lake reads materially cleaner than North Turtle Lake on nutrients and algae. A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.

For a recreational visitor, the wider gap in the readings is decisive: Deer Lake has the lower nutrient and algae numbers. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

Deer Lake

Otter Tail County, Minnesota

Good clarity, visible to about 12.3 ft.

North Turtle Lake

Otter Tail County, Minnesota

Murky, only visible to about 4 ft.

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Side-by-Side Metrics

Metric	Deer Lake	North Turtle Lake
Water Clarity	12.3 ft Better	4 ft
Phosphorus	21 µg/L Better	54.5 µg/L
Chlorophyll-a (Algae)	4.8 µg/L Better	22 µg/L
Maximum Depth	26 ft Better	19 ft
Surface Area	447 acres	1,773 acres
Public Access	Yes	Yes
Fish Species	16 Better	12
Trophic State	mesotrophic	eutrophic

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.

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Compare Deer Lake or North Turtle Lake against a different lake.

Deer Lake vs Pickerel Lake Deer Lake vs Silver Lake Deer Lake vs Pelican Lake North Turtle Lake vs South Turtle Lake North Turtle Lake vs Silver Lake North Turtle Lake vs Pelican Lake

Verdict

Deer Lake reads lower on nutrients and algae than North Turtle Lake. Water clarity: 12.3 ft vs 4 ft. For fishing diversity, Deer Lake also leads with 16 species.

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Where to stay near Deer Lake and North Turtle Lake

Compare cabins, hotels, and vacation rentals around Deer Lake and North Turtle Lake. Both lakes are pinned on the map, so you can see which stays sit nearer the one you pick. Switch to Satellite to see how close each is to the water.

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Full Deer Lake report →Full North Turtle Lake report →All Otter Tail County lakes →Cleanest lakes in Minnesota →

Source: EPA National Aquatic Resource Surveys, 2026.