Skip to main content
LakeQuality

Bad Medicine Lake and Big Sugar Bush Lake read the same on nutrients and algae. Both are in Becker County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Bad Medicine Lake and Big Sugar Bush 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 the readings, Bad Medicine Lake versus Big Sugar Bush 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.

Bad Medicine Lake

Becker County, Minnesota

Crystal clear, you can see 25 ft down.

Big Sugar Bush Lake

Becker County, Minnesota

Crystal clear, you can see 16.5 ft down.

Side-by-Side Metrics

MetricBad Medicine LakeBig Sugar Bush Lake
Water Clarity25 ft Better16.5 ft
Phosphorus6 µg/L Better10 µg/L
Chlorophyll-a (Algae)1.6 µg/L Better2.7 µg/L
Maximum Depth84 ft Better42 ft
Surface Area803 acres522 acres
Public AccessYesYes
Fish Species1313
Trophic Stateoligotrophicoligotrophic

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

Both lakes earn the same Grade A. The tiebreakers come down to clarity (Bad Medicine Lake: 25 ft, Big Sugar Bush Lake: 16.5 ft) and what you want from the lake. Bad Medicine Lake matches its peer on species count.

Source: EPA National Aquatic Resource Surveys, 2026.