Turbidity

Today students considered another factor that may be causing problems for fish in Gray Area.  With logging an active business, some of the rivers were looking a little dirty.  Students used secchi disks to determine the clarity, or turbidity, of the water in the various lakes and rivers in the area.  They then examined the sediment files to understand the effects of erosion and high levels of sediments on the organisms living there.

Bare earth, verses plant material erosion demonstration.