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Crawling Stone Lake reads lower on nutrients and algae than Boulder Lake. Both are in Vilas County, Wisconsin.

Reviewed by LakeQuality Editorial Team · Updated

Both Boulder Lake and Crawling Stone Lake sit in Wisconsin. 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, Boulder Lake versus Crawling Stone 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.

Boulder Lake

Vilas County, Wisconsin

Murky, only visible to about 5.6 ft.

Crawling Stone Lake

Vilas County, Wisconsin

Crystal clear, you can see 16 ft down.

Side-by-Side Metrics

MetricBoulder LakeCrawling Stone Lake
Water Clarity5.6 ft16 ft Better
Phosphorus21.6 µg/L10.5 µg/L Better
Chlorophyll-a (Algae)No dataNo data
Maximum Depth23 ft87 ft Better
Surface Area516 acres1,483 acres
Public AccessYesUnknown
Fish Species66
Trophic Stateeutrophicoligotrophic

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

Boulder Lake and Crawling Stone Lake read the same on nutrients and algae overall. The tiebreakers come down to clarity (Boulder Lake: 5.6 ft, Crawling Stone Lake: 16 ft) and what you want from the lake. Boulder Lake matches its peer on species count.

Stays via Stay22

Where to stay near Boulder Lake and Crawling Stone Lake

Compare cabins, hotels, and vacation rentals around Boulder Lake and Crawling Stone 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 Boulder Lake and Crawling Stone Lake

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Source: EPA National Aquatic Resource Surveys, 2026.