Secchi Dip-In

Come take part in the North American Lake Management Society annual Secchi Dip-In. For the month of July, volunteer participants can gather and submit important data concerning our lakes, rivers, and estuaries. Secchi disks are easy to make and use. With a Secchi disk, you can travel to your local lake and measure its depths and test its water quality for scientific study.

How to Measure Secchi and Site Depth A Secchi disk is used to measure how deep a person can see into the water. It is lowered into the lake until the observer loses sight of it indicating how de...