Sounds good to me too. One of my parents friends (many years ago) built a root cellar like that using heavy timbers to hold everything in place. He built shelves in it and as we're in a moderate climate he also used it as his wine cellar!:D
Lois
Look up pallet root cellars, they will keep your veggies high and dry above water. I have the same problem here and that is what I am planning to build, if necessary, I will use the above ground "clamp" method with a pallet under the vegetables surrounded by straw and dirt packed at the top, put...