by Doc » Thu Mar 22, 2012 4:43 pm
I would think sand bars would be more subject to specific river events...i.e heavy rains deposit a great amount of sediment resulting in a bar that works for a time then degrades and is replenished by the next event. I think I recall a great article in TSJ on just this type of episode a few years back.
Of course I could be wrong...don't tell my wife.
Doc
"If you don't surf...don't start".