Henrietta Lake vs Lower Nemahbin Lake
Water quality, depth, fish species, and recreation comparison.
Lower Nemahbin Lake has a higher water quality grade (A, Excellent) than Henrietta Lake (D, Poor). Both are in Waukesha County, Wisconsin.
Both Henrietta Lake and Lower Nemahbin Lake sit in Wisconsin. 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. The grades are meaningfully apart: Lower Nemahbin Lake grades a A while Henrietta Lake grades a D. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.
For a recreational visitor, the wider grade gap is decisive — Lower Nemahbin Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
Henrietta Lake
Murky, only visible to about 4.5 ft.
Lower Nemahbin Lake
Good clarity, visible to about 10.9 ft.
Side-by-Side Metrics
| Metric | Henrietta Lake | Lower Nemahbin Lake |
|---|---|---|
| Overall Grade | D (Poor) | A (Excellent) |
| Water Clarity | 4.5 ft | 10.9 ft |
| Phosphorus | No data | 11 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | - |
| Surface Area | 68 acres | 268 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | eutrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Lower Nemahbin Lake wins on overall water quality with a Grade A versus Henrietta Lake's Grade D. Water clarity: 10.9 ft vs 4.5 ft. For fishing diversity, Lower Nemahbin Lake also leads with 0 species.