About this dataset
Secchi depth readings should be taken mid-day (between 10am and 3pm) with sunglasses off, sun to your back. pH, Temperature, Total Dissolved Solids and Conductivity readings are taken using a Hanna handheld combo meter. Meters should be calibrated for pH 4, & 7 and for conductivity prior to each sampling event or at least weekly. Probe should be moved continuously in the water until it settles on a value. If pH, etc. readings are to be taken by putting water sample in a bottle or container first, the container/bottle should be rinsed with lake water several times prior to immersing the probe. Chosen locations should be sampled on a regular basis throughout the season (ideally weekly but at a minimum monthly) in order to track changes through time.
