How Clean Is Ludden Lake?
Ludden Lake has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 1.5 ft. Phosphorus: 172 µg/L. Trophic State Index: 75.
Cleanliness Snapshot
| Metric | Ludden Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 1.5 ft | — |
| Phosphorus | 172 µg/L | <30 = clean |
| Trophic State Index | 75 | <50 = clean |
How does Ludden Lake compare?
Ludden Lake's grade of F falls below the Wisconsin state average of C. It ranks #6 of 6 lakes in Iowa County by water quality score. Multi-year monitoring data shows water quality is declining based on 5 years of records.