Dairyland Reservoir vs Island Lake
Water quality, depth, fish species, and recreation comparison.
Island Lake has a higher water quality grade (A, Excellent) than Dairyland Reservoir (D, Poor). Both are in Rusk County, Wisconsin.
D
Dairyland Reservoir
Rusk County, Wisconsin
Murky, only visible to about 4.5 ft.
A
Island Lake
Rusk County, Wisconsin
Crystal clear, you can see 23.8 ft down.
Side-by-Side Metrics
| Metric | Dairyland Reservoir | Island Lake |
|---|---|---|
| Overall Grade | D (Poor) | A (Excellent) |
| Water Clarity | 4.5 ft | 23.8 ft |
| Phosphorus | No data | 15.4 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 70 ft | 54 ft |
| Surface Area | 1.9K acres | 543 acres |
| Public Access | Yes | Yes |
| Fish Species | 8 | 6 |
| Trophic State | eutrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Island Lake wins on overall water quality with a Grade A versus Dairyland Reservoir's Grade D. Water clarity: 23.8 ft vs 4.5 ft. For more fish-species variety, Dairyland Reservoir edges ahead with 8 documented species.