Secchi Reading Simulator
Click 'Take Reading' to try one of the Lake Types.

Lake Type Description Clear Clear lakes typically have a blue background color and Secchi reading greater than 4 meters. Intermediate Intermediate lakes typically have a Secchi reading in the range of three to seven meters. The background color may be blue or muted green or brown. Productive Productive lakes have a green background color, high algae concentrations, and typically have Secchi transparency readings less than three meters. Dystrophic Dystrophic lakes have a distinct tea or rootbeer color with typical Secchi readings less than 3 meters. Dystrophic and Productive These lakes typically have a green-brown background color and limited transparency with Secchi reading typically less than three meters. Simulator Size: NormalSmaller Note: Smaller animation size may improve performance on older computers.