clarity

How depth is measured

Lower your disk into the water until you can't see it any longer. Make sure you take note of how much rope you've lowered into the water.

What it means

Completely natural and man-made things can effect water clarity. Be sure to note if you've had a recent rainfall or if you've noticed unusual events near the test site. Your water clarity can be affected by:

secchi disk
How the secchi disk works.