Secchi Disc
The Secchi disc is lowered vertically through the water column until it disappears from sight.
Secchi disc measurements are used to determine the 1% light level and are performed on all daylight stations, weather-permitting.
Secchi disc measurements are used to determine the 1% light level and are performed on all daylight stations, weather-permitting.
By downloading you accept the following data-use agreement
By downloading you accept the following data-use agreement
By downloading you accept the following data-use agreement
