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Lower Prior Lake reads lower on nutrients and algae than Upper Prior Lake. Both are in Scott County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Lower Prior Lake and Upper Prior 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 their nutrient and algae readings, Lower Prior Lake versus Upper Prior 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.

Lower Prior Lake

Scott County, Minnesota

Good clarity, visible to about 10 ft.

Upper Prior Lake

Scott County, Minnesota

Murky, only visible to about 5 ft.

Side-by-Side Metrics

MetricLower Prior LakeUpper Prior Lake
Water Clarity10 ft Better5 ft
Phosphorus27 µg/L Better38.7 µg/L
Chlorophyll-a (Algae)4.8 µg/L Better8.8 µg/L
Maximum Depth60 ft Better50 ft
Surface Area956 acres386 acres
Public AccessYesYes
Fish Species1516 Better
Trophic Statemesotrophiceutrophic

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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Verdict

Lower Prior Lake and Upper Prior Lake read the same on nutrients and algae overall. The tiebreakers come down to clarity (Lower Prior Lake: 10 ft, Upper Prior Lake: 5 ft) and what you want from the lake. Lower Prior Lake has fewer fish species than Upper Prior Lake.

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Where to stay near Lower Prior Lake and Upper Prior Lake

Compare cabins, hotels, and vacation rentals around Lower Prior Lake and Upper Prior 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.

Top-rated places to stay near Lower Prior Lake and Upper Prior Lake

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Source: EPA National Aquatic Resource Surveys, 2026.