Transparency is a measurement of clarity through the water column.
	-Secchi Depth is a method has been used consistently in Long Pond for several decades
	-acts as a good primary indicator of Lake water quality
	-fairly simple and accurate way of measurement
	There has been a decreasing trend in mean secchi depth readings over the past 30 years in Long Pond
	-This is an indication of increased plant production as well as general productivity.
	-Important to note because it can be indicative of detrimental change in general lake water quality.