Wudongde flooded old chengdu-kunming railway for 42 kilometers. Wudongde hydropower station is the first stage of the four-stage power station in the lower reaches of Jinsha River in the national hydropower planning. After the water level in Wudongde reservoir area reached 945 meters, the 42-kilometer section of Old chengdu-kunming railway was submerged. So Wudongde flooded old chengdu-kunming railway for 42 kilometers.