The above graph depicts average secchi depth recorded from April through November, 1999. For each week's data on secchi depth, a weekly average was calculated. Secchi depth is measured using a black and white secchi disc. As turbidity increases There will be a decrease in secchi depth. Secchi depth is measured and recorded in meters.
Secchi depth is recorded in meters.
Between the weeks of July 13 th and September 14 th the secchi depth increases from 1.6 m, to 3.2 m. Compare the 1998 graph to 1999.