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Third River Flowage Lake reads lower on nutrients and algae than Dixon Lake. Both are in Itasca County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Dixon Lake and Third River Flowage Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any differences in the readings here are about the lakes themselves, not the agencies sampling them. These two sit close on the readings, Dixon Lake versus Third River Flowage Lake. The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.

With readings 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.

Dixon Lake

Itasca County, Minnesota

Murky, only visible to about 6 ft.

Third River Flowage Lake

Itasca County, Minnesota

Moderate clarity, visible to about 6.9 ft.

Side-by-Side Metrics

MetricDixon LakeThird River Flowage Lake
Water Clarity6 ft6.9 ft Better
Phosphorus34 µg/L28.5 µg/L Better
Chlorophyll-a (Algae)19.6 µg/L5.5 µg/L Better
Maximum Depth29 ft69.8 ft Better
Surface Area622 acres56,471 acres
Public AccessYesYes
Fish Species1520 Better
Trophic Stateeutrophicmesotrophic

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

Third River Flowage Lake reads lower on nutrients and algae than Dixon Lake. Water clarity: 6.9 ft vs 6 ft. For fishing diversity, Third River Flowage Lake also leads with 20 species.

Source: EPA National Aquatic Resource Surveys, 2026.