The Secchi Disk is a 12-inch black and white plate attached to a rope or chain and lowered into a body of water until it is no longer visible. The depth at which the disk can no longer be seen is ...

The commission compiled Secchi Depth data to determine the clearest reservoirs. “Secchi Depth is measured in meters using a Secchi Disc which is a device that is lowered into the water. The depth at ...

“I don’t see it anymore,” I called out. The plate had descended to a depth where, technically speaking, the difference between the wavelength of the light bouncing off of it and the wavelength of the ...

INCLINE VILLAGE, Nev. — UC Davis Tahoe Environmental Research Center next week will be celebrate Father Angelo Secchi’s 203rd birthday. To honor him, TERC has declared Tuesday, June 29, to be Secchi ...

Water clarity is key to the health and restoration of marine plants and animals worldwide, particularly in shallow coastal systems such as the Chesapeake Bay. But it turns out that measuring water ...