Status
Lake Status
Current conditions on Koonz and Beaulieu, and how to flag a weed or algae bloom.
Latest water-quality reading
Koonz
July 10, 2025
reading date
Secchi depth
8.5 ft
clearer = larger
Phosphorus
18.2 ppb
nutrient level
Chlorophyll-a
5.1 ppb
algae proxy
Full history, yearly averages, and both lakes: water-quality report.
What these numbers mean
The Secchi depth measures how deep a white disk stays visible as it’s lowered into the lake — a higher number means clearer water. Phosphorus is the nutrient that fuels algae growth: lower is better. Chlorophyll-a tracks the algae currently in the water. Readings are taken by the volunteer monitoring program on scheduled sampling days; single readings can swing with weather, so trends over the season matter more than any one number.
Want to know what these numbers mean? What the numbers mean · Lake glossary
Report a weed or algae
Saw a bloom, scum line, or die-off? Tell us — it takes a minute and helps the association act early.
Report a sightingUpcoming events
Water-quality days, clean-ups, and the annual meeting — see what’s happening next on the lake.
Browse eventsRecent readings
| Date | Lake | Secchi (ft) | Phos. (ppb) | Chl-a (ppb) |
|---|---|---|---|---|
| July 10, 2025 | Koonz | 8.5 | 18.2 | 5.1 |
| July 10, 2025 | Beaulieu | 7.1 | 22.4 | 6.8 |