. Earth and rock damSummaryEarth and rock dam, with another name as local material dam,is mainly built with earth and rock materials near the site. It can be classified based on the materials it used, earth dam mainly with earth, sand, grit, and gravel, and rock dam mainly with rock ballast, gravel, and exploded rocks.Features of earth and rock damStrong pointsWith convenient supply of materials, many building materials such as steel, cement, and t