Clearwater Lake vs Greenwood Lake
Water quality, depth, fish species, and recreation comparison.
Clearwater Lake and Greenwood Lake read the same on nutrients and algae. Both are in Cook County, Minnesota.
Both Clearwater Lake and Greenwood 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 the readings, Clearwater Lake versus Greenwood 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.
Clearwater Lake
Crystal clear, you can see 29 ft down.
Greenwood Lake
Crystal clear, you can see 15.1 ft down.
Side-by-Side Metrics
| Metric | Clearwater Lake | Greenwood Lake |
|---|---|---|
| Water Clarity | 29 ft Better | 15.1 ft |
| Phosphorus | 4 µg/L Better | 10 µg/L |
| Chlorophyll-a (Algae) | 1.3 µg/L Better | 2.6 µg/L |
| Maximum Depth | 65 ft | 112 ft Better |
| Surface Area | 462 acres | 2,043 acres |
| Public Access | No | Yes |
| Fish Species | 0 | 10 Better |
| Trophic State | oligotrophic | oligotrophic |
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.
Swap a lake
Compare Clearwater Lake or Greenwood Lake against a different lake.
Verdict
Both lakes earn the same Grade A. The tiebreakers come down to clarity (Clearwater Lake: 29 ft, Greenwood Lake: 15.1 ft) and what you want from the lake. Clearwater Lake has fewer fish species than Greenwood Lake.
Source: EPA National Aquatic Resource Surveys, 2026.