Ecological water retaining dam

The invention discloses an ecological water retaining dam. The whole dam body comprises three parts, i.e. an earth-rock dam body, a timber pile reinforcing structure and an isolating bamboo raft, wherein the earth-rock dam body is in a dual-layer structure; the inner layer is filled with bagged clay; the outer layer is filled with bagged gravel; the timber pile reinforcing structure is used for ensuring the safety and the stability of the dam body; and the isolating bamboo raft is used for reinforcing and isolating turbulence. Due to the adoption of natural material, the ecological water retaining dam disclosed by the invention has the advantages of stable structure, convenience in dismantlement and construction, and having the function of intercepting a water body, water conservation function for controlling the water level, and certain functions of purifying the water quality and repairing ecology as well as a landscape effect; and the ecological water retaining dam is suitable for construction of temporary