River projects are large-scale engineering works that involve the construction of DAMS, levees, and other structures to control the flow of rivers. DAMS are a common type of river project, which are built to store water, generate electricity, or provide flood protection. They are typically constructed by blocking off a section of a river with a wall or embankment, creating a reservoir behind it. Levees are another type of river project, which are built to protect low-lying areas from flooding. They are usually constructed by raising the ground level along the banks of a river, creating a barrier between the river and the land.