Bright Lake vs Hall Lake
Water quality, depth, fish species, and recreation comparison.
Bright Lake and Hall Lake both received the same overall water quality grade of F (Algae-prone). Both are in Martin County, Minnesota.
Bright Lake and Hall 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. The grades are close: Bright Lake (F) and Hall Lake (F) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.
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.
Bright Lake
Very murky, less than 1 ft of visibility.
Hall Lake
Very murky, less than 3 ft of visibility.
Side-by-Side Metrics
| Metric | Bright Lake | Hall Lake |
|---|---|---|
| Overall Grade | F (Algae-prone) | F (Algae-prone) |
| Water Clarity | 1 ft | 3 ft Better |
| Phosphorus | 110.5 µg/L | 96 µg/L Better |
| Chlorophyll-a (Algae) | 54.1 µg/L Better | 57.4 µg/L |
| Maximum Depth | 7 ft | 27 ft Better |
| Surface Area | 639 acres | 548 acres |
| Public Access | Yes | Yes |
| Fish Species | 20 Better | 19 |
| 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 Bright Lake or Hall Lake against a different lake.
Verdict
Both lakes earn the same Grade F. The tiebreakers come down to clarity (Bright Lake: 1 ft, Hall Lake: 3 ft) and what you want from the lake. Bright Lake supports more documented fish species.
Source: EPA National Aquatic Resource Surveys, 2026.