Platte County Lake Quality
Wisconsin, 3 lakes, average grade C (Fair)
Only 3 lakes in Platte County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. Platte County averages to a C. The distribution behind that average matters more than the letter: a few stressed lakes versus many decent ones can produce the same average as the inverse.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Weatherby Lake (B); the most-stressed is Houston Lake (F).
Quick Answers for Platte County
Planning a trip? Check special fishing regulations for Weatherby Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
All Lakes in Platte County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Weatherby Lake | B | 6.2 ft | - | 16 µg/L |
| 2 | Waukomis Lake | C | 4.7 ft | - | 26 µg/L |
| 3 | Houston Lake | F | 1.1 ft | - | 176 µg/L |
Source: EPA National Aquatic Resource Surveys, 2026.