Examples of Secchi disk in a sentence
The clarity of the water is such that a Secchi disk is visible at the bottom of the tank.
Field measurements include water depth, water temperature, and Secchi disk transparency.
An algal bloom is defined as a planktonic growth of algae which causes Secchi disk transparency to be less than 2.0 meters.
The affected water has a recent history of severe algae blooms of less than one meter Secchi disk transparency;[PL 1995, c.
Application of an algicide may only occur after the Secchi disk transparency of the water is less than 2 meters.
Three parameters are the most important measures of eutrophication in most New York lakes: total phosphorus, chlorophyll a (estimating the amount of algae), and Secchi disk transparency.
Wherever the water is less than 10 feet deep, the Secchi disk reading shall not be less than 80 percent of the depth in more than 20 percent of the readings in any zone.
While depth of the zone varies with many factors, it can be estimated as a multiple of the Secchi disk transparency (SDT).
Secchi disk readings have improved from less than 10 feet before the project to up to 20 feet during July 2004 after the alum treatment.
It also affects the length of the recreational season Secchi Disk Transparency (m) Conductivity (µmho/cm) pH Color (true) (platinum color units) Phosphorus (total, mg/l) Nitrogen (nitrate, ammonia, and total (dissolved), mg/l) Chlorophyll a (µg/l) Calcium (mg/l)Determined by measuring the depth at which a black and white disk disappears from sight, the Secchi disk transparency estimates the clarity of the water.