B
Jefferson County Lake Quality
Wisconsin — 10 lakes, average grade B (Good)
All Lakes in Jefferson County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Rock Lake - | A | 12m | 17.9 µg/L |
| 2 | Hope Lake - | A | 8m | — |
| 3 | Lake Ripley - | A | 8.5m | 22.3 µg/L |
| 4 | Blue Spring Lake - | A | 6m | 23.8 µg/L |
| 5 | Lower Spring Lake - | B | 5m | 46.9 µg/L |
| 6 | Red Cedar Lake - | B | 4m | 23.7 µg/L |
| 7 | Lower Spring Lake - Lower Spring Lake | C | 3m | — |
| 8 | Mud Lake - | C | 2.25m | 63.1 µg/L |
| 9 | Lake Koshkonong - Deep Hole Off South Shore | D | 1.75m | 288 µg/L |
| 10 | Lake Koshkonong - N of Charley Bluff Landing | D | 1.85m | 282 µg/L |