We got a permit to build a seawalll at the lake to hold in the sand I am ordering to replace the 5 feet or so that the hurricanes chewed out. As I explained to the the nice government official, we aren't burdened with any preconceived notions of how to accomplish this goal. He thought it would be best to have the sand delivered and bulldozed and dig the footrs, then use cb and rebar with bracing to the landward side. I got home and realized- the footers will probably have to be poured into water. The lake level is not dropping as fast as it has in past years. (builds to a high water mark during the rainy season and then drops during the dry season) This means that I will probably be digging a trench into water ( or the guy with a cat, if I can find one). Not being burdened much with building knowledge, my question to the board buddies is 1. If I pour concrete into a space where there is water in the bottom of the form, will it set up? 2. Should the footer be cb and concrete, or just concrete with the cb, rebar and concrete filling on top? My plan was to slope the sand and build a wall down into the sand, with sodding and wild lake grasses laid on the new sand. I figured the lake would eventually erode the sand on the lake side of the wall , hopefully the seawall would keep it from eating any more of our lot. We also have the dock sitting about 4 feet out into the water and I thought I would just build a cb/rebar /concrete structure from a little before the planned seawall to the dock- it's in water about 3 feet deep at the shallowest. Must I wait for the feet of the dock to be dry and exposed, or can I work in standing water? I can't contract this out- the permit is only good for 6 months and the waiting list for seawall construction in this srea is 6-9 months due to all the hurricane damage. Any comments, thoughts, etc, are much appreciated.