Shallow Lake vs Trout Lake
Water quality, depth, fish species, and recreation comparison.
Shallow Lake and Trout Lake both received the same overall water quality grade of A (Excellent). Both are in Itasca County, Minnesota.
Both Shallow Lake and Trout 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 — Shallow Lake (A) versus Trout Lake (A). 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.
Shallow Lake
Crystal clear, you can see 16.4 ft down.
Trout Lake
Crystal clear, you can see 18 ft down.
Side-by-Side Metrics
| Metric | Shallow Lake | Trout Lake |
|---|---|---|
| Overall Grade | A (Excellent) | A (Excellent) |
| Water Clarity | 16.4 ft | 18 ft |
| Phosphorus | 9 µg/L | 3.5 µg/L |
| Chlorophyll-a (Algae) | 3.2 µg/L | 1.1 µg/L |
| Maximum Depth | 85 ft | 157 ft |
| Surface Area | 539 acres | 1,743 acres |
| Public Access | Yes | No |
| Fish Species | 12 | 9 |
| Trophic State | oligotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade A. The tiebreakers come down to clarity (Shallow Lake: 16.4 ft, Trout Lake: 18 ft) and what you want from the lake. Shallow Lake supports more documented fish species.
Source: EPA National Aquatic Resource Surveys, 2026.