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

Reviewed by LakeQuality Editorial Team · Updated

Spring Lake and Upper Prior 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. These two sit close on their nutrient and algae readings, Spring 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.

Spring Lake

Scott County, Minnesota

Murky, only visible to about 6.2 ft.

Upper Prior Lake

Scott County, Minnesota

Murky, only visible to about 5 ft.

Side-by-Side Metrics

MetricSpring LakeUpper Prior Lake
Water Clarity6.2 ft Better5 ft
Phosphorus64.6 µg/L38.7 µg/L Better
Chlorophyll-a (Algae)14.3 µg/L8.8 µg/L Better
Maximum Depth37 ft50 ft Better
Surface Area592 acres386 acres
Public AccessYesYes
Fish Species1516 Better
Trophic Stateeutrophiceutrophic

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

Upper Prior Lake reads lower on nutrients and algae than Spring Lake. Water clarity: 5 ft vs 6.2 ft. For fishing diversity, Upper Prior Lake also leads with 16 species.

Stays via Stay22

Where to stay near Spring Lake and Upper Prior Lake

Compare cabins, hotels, and vacation rentals around Spring 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 Spring Lake and Upper Prior Lake

Prices for Oct 9–11, 4 adults. Change dates on the map below.

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Source: EPA National Aquatic Resource Surveys, 2026.