Quote Originally Posted by skip
>snip Say it is and that the current water level is 15 feet on average. You would see a 0.39 foot drop in the water level. You probably wouldn't see it actually. >snip
-skip
Just food for thought.

0.39 feet is ~4.75 inches. With a bank slope of 10 degrees, the waterline would recede ~2 feet 3 inches. You would definitely see it. Try plugging in some numbers for shallower slopes and it gets worse.