1. The Secchi disk is commonly used to test for eutrophication. 2. In 1940, researchers measured a Secchi disk depth of. 3. The lake's water transparency is good, with a Secchi disk depth of. 4. Secchi disk measurements do not indicate how attenuation changes with depth or particular wavelengths of light.5. Water clarity in the lake is low, with secchi disk measurements averaging less than 3 meters. 6. Turbidity in lakes, reservoirs, channels, and the ocean can be measured using a Secchi disk . 7. It is one of the most transparent lakes in the world, with Secchi disk visible more than deep. 8. He invented the Secchi disk , which is used to measure water transparency in oceans, lakes and fish farms. 9. The underwater viewer can be used for observing reefs, checking boat moorings, secchi disks and other survey work. 10. The transparency of the water, which determines the depth of the photic zone, is measured simply with a Secchi disk .
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