A dam can also be used to collect water or for storage of water which can be evenly distributed between locations. Hydroelectricity is electricity produced from hydropower. Hydroelectric power comes from the potential energy of dammed water driving a water turbine and generator. A dam is a barrier that stops or restricts the flow of water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Aerial, fly, flying, forest, valley. 4K UHD 3840×2160.