Skip to main content
LakeQuality

Carlos Lake vs Irene Lake

Water quality, depth, fish species, and recreation comparison.

Carlos Lake has a higher water quality grade (A, Excellent) than Irene Lake (B, Good). Both are in Douglas County, Minnesota.

Both Carlos Lake and Irene Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. These two are within a letter of each other on the rubric — Carlos Lake (A) versus Irene Lake (B). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.

With grades 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.

A

Carlos Lake

Douglas County, Minnesota

Crystal clear, you can see 17.2 ft down.

B

Irene Lake

Douglas County, Minnesota

Good clarity, visible to about 10.7 ft.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricCarlos LakeIrene Lake
Overall GradeA (Excellent)B (Good)
Water Clarity17.2 ft10.7 ft
Phosphorus13 µg/L22.5 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth163 ft44 ft
Surface Area2.6K acres639.26 acres
Public AccessYesYes
Fish Species11
Trophic Stateoligotrophicmesotrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Carlos Lake wins on overall water quality with a Grade A versus Irene Lake's Grade B. Water clarity: 17.2 ft vs 10.7 ft. For fishing diversity, Carlos Lake also leads with 1 species.