Thanks jrc,
I am looking into the lake temperature trend over the near past to see if it might be because of warmer water temps. There is no data for underwater temps available. I see quite a bit more slime, growth and fuzz on the bottom in recent years. The visibility in sites I have been in for years is noticably lower and may be due to more growth in the water from all contributing factors. Its a good thing we have the six months of winter. They tend to kill nasty organisms shallow growth and settle out suspensed stuff. The constant water into (mountain springs) and out of the lake (rivers) is also good for its clarity. During brisk SW winds, we have seen UFO's both floating and suspended in the water on the West side of the island. That tends to point a straight line towards a particular shoreline facility and hence part of my original question. Thanks for the input.
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