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A distiguished statesman once said, "Great visibility is overrated."
With all due respect to ZzzKing and the 'distinguished statesman', and I have the utmost respect for both of you, if someone said "lets go dive PK for the adventure because the vis' sucks!", I would line up for that and go do it; and have fun doing it! Let's go dive PK for the adventure. Let's go dive PK because the vis' sucks and you just don't know what you are going to find! These are all good reasons to go dive PK.
Lakes silt in over time as they age. Dirt washes in from upstream and settles out as the water speed slows.
I was a little worried that you had become a clear water snob there.
I read somewhere once that Lake Texoma, provided the Denison Dam holds and remains in good repair, is only expected to last 400 to 600 years before it completely silts over. I would expect the same with any river fed impoundment.