Testing

LAKE WATER QUALITY – JERRY SURPRENANT
Testing was done this summer during June, July and August by Jerry and Judy Surprenant. The Secchi
disk test consists of dropping a white disk into the lake and determining at what depth of water you can
no longer see the disk. During this summer’s tests, one set showed a depth of only 7.0 to 7.5 feet which is
much less than most other tests. A similar test on Cadotte Lake showed a depth of only six feet. The
weather was a little windy, but there were no unusual conditions that Jerry and Judy could see that
would account for the reduced depths. Other tests during the summer were back to the normal ten to
eleven feet. New satellites have been put into use that will coordinate their readings with results
obtained during our testing to see if the satellite information would be sufficient to replace actual on-thewater testing. More information about this will be available next summerdd paragraph to your block, Fall Report
For the last 20 years we have taken water samples an submitted them to the DNR
for analysis. Each year 4 samples are taken spring, late June, July and August.
In 2020 only 3 samples were taken due to COVID-19. The key measures are Total
Phosphorus, Chlorophyll and Trophic State.
The water clarity is also taken and measured in feet, using a black and white disc
lower into the water. Over the last 20 years clearest recorded is 12 feet the
lowest 7 feet.
The last 5 years has averaged 8.5 feet. L