How much does a large swale cost per square meter? How many meters can usually be done in a day of work. I am asking about a 500 hectare property in Villacastin, Spain. There is a large inclination throughout the property, there is enormous water capture capabilities. How should pricing go on dams? It probably depends on many factors. Dam wall price per meter? Bamboo and ground cover on dam wall, right? What plants, leguminous trees are good for swale walls?