One Horse Gap Lake vs Tecumseh Lake
Water quality, depth, fish species, and recreation comparison.
One Horse Gap Lake and Tecumseh Lake both received the same overall water quality grade of B (Good). Both are in Wisconsin.
One Horse Gap Lake and Tecumseh Lake are both in Illinois — 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 — One Horse Gap Lake (B) versus Tecumseh Lake (B). 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.
One Horse Gap Lake
Murky, only visible to about 4 ft.
Tecumseh Lake
Murky, only visible to about 3.6 ft.
Side-by-Side Metrics
| Metric | One Horse Gap Lake | Tecumseh Lake |
|---|---|---|
| Overall Grade | B (Good) | B (Good) |
| Water Clarity | 4 ft | 3.6 ft |
| Phosphorus | 17 µg/L | 18 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | - |
| Surface Area | 29 acres | 13 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | eutrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade B. The tiebreakers come down to clarity (One Horse Gap Lake: 4 ft, Tecumseh Lake: 3.6 ft) and what you want from the lake. One Horse Gap Lake matches its peer on species count.