Fox Lake vs Hall Lake
Water quality, depth, fish species, and recreation comparison.
Fox Lake and Hall Lake both received the same overall water quality grade of F (Algae-prone). Both are in Martin County, Minnesota.
Both Fox Lake and Hall 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 — Fox Lake (F) versus Hall Lake (F). 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.
Fox Lake
Very murky, less than 1 ft of visibility.
Hall Lake
Very murky, less than 3 ft of visibility.
Side-by-Side Metrics
| Metric | Fox Lake | Hall Lake |
|---|---|---|
| Overall Grade | F (Algae-prone) | F (Algae-prone) |
| Water Clarity | 1 ft | 3 ft Better |
| Phosphorus | 197 µg/L | 96 µg/L Better |
| Chlorophyll-a (Algae) | 65.8 µg/L | 57.4 µg/L Better |
| Maximum Depth | 20 ft | 27 ft Better |
| Surface Area | 951 acres | 548 acres |
| Public Access | Yes | Yes |
| Fish Species | 17 | 19 Better |
| Trophic State | hypereutrophic | eutrophic |
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 Fox Lake or Hall Lake against a different lake.
Verdict
Both lakes earn the same Grade F. The tiebreakers come down to clarity (Fox Lake: 1 ft, Hall Lake: 3 ft) and what you want from the lake. Fox Lake has fewer fish species than Hall Lake.
Source: EPA National Aquatic Resource Surveys, 2026.