How Clean Is Lamb Lake?
Lamb Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 7.2 ft. Trophic State Index: 49.
Cleanliness Snapshot
| Metric | Lamb Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | D |
| Water Clarity (Secchi) | 7.2 ft | — |
| Trophic State Index | 49 | <50 = clean |
How does Lamb Lake compare?
Lamb Lake's grade of C matches or beats the Wisconsin state average of D. It ranks #1 of 2 lakes in Johnson County by water quality score.