William, is you visibility actually measured, or is this from eyeballing it. 6 inch visibility, if it is an algae bloom is at a very dangerous stage. Is it more stained, muddy, or pea soup green? Did the rain runoff come from disturbed or bare soil; or possibly from agricultural terrain. This info will help in the diagnosis. Measure the vis. by dropping down a white coffee cup on a string and measure the depth that it disappears.

JHAP and Brettski, share the pointy hat while in the corner, please.

Last edited by burgermeister; 04/27/10 11:05 PM.