Current Lake Marsh vs Split Rock Reservoir
Water quality, depth, fish species, and recreation comparison.
Current Lake Marsh and Split Rock Reservoir both received the same overall water quality grade of F (Very Poor). Both are in Minnesota.
Current Lake Marsh and Split Rock Reservoir 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. These two are within a letter of each other on the rubric — Current Lake Marsh (F) versus Split Rock Reservoir (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.
Current Lake Marsh
Very murky, less than 1.3 ft of visibility.
Split Rock Reservoir
Very murky, less than 1.3 ft of visibility.
Side-by-Side Metrics
| Metric | Current Lake Marsh | Split Rock Reservoir |
|---|---|---|
| Overall Grade | F (Very Poor) | F (Very Poor) |
| Water Clarity | 1.3 ft | 1.3 ft |
| Phosphorus | No data | 241 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | - |
| Surface Area | 73 acres | 80 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 1 |
| Trophic State | hypereutrophic | hypereutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade F. The tiebreakers come down to clarity (Current Lake Marsh: 1.3 ft, Split Rock Reservoir: 1.3 ft) and what you want from the lake. Current Lake Marsh has fewer fish species than Split Rock Reservoir.