NFIP also requires replacement buildings in a flood hazard area be constructed to resist future flood damages and discourages future construction in flood hazard areas. Nonproject levee - A levee that is mostly owned and maintained by a reclamation district or private owner. Term used by the Corps of Engineers. Probable Maximum Storm - The flood discharge that may be expected from the most severe combination of critical meteorological and hydrological conditions that are possible in the region. It is used by the Corps of Engineers to design dam spillways and outlet facilities.
Project levee - A federally designated and funded levee.
These levees are inspected by the Department of Water Resources. R Reach - a length, distance, or leg of a channel or other water course. Regulatory floodway - The channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than one foot. Reservoir - A pond, lake, tank, basin, or other space, either natural or created in whole or in part by the building of a structure such as a dam, which is used for storage, regulation, and control of water for power, navigation, and recreation. Revetmen t - A facing of stone, concrete, sandbags, or other materials sed to protect a bank of earth from erosion, such as a retaining wall.