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. . . FLOODPLAIN MANAGEMENT Local Ordinance/Statutory Reauirements Communities that manage their floodplains in Colorado do so most often through the local regulatory process. This requires a community to adopt an ordinance or regulation that sets forth the performance standards by which development will occur in identified flood hazard areas. Nationwide and in Colorado, regulations are enforced within the area of the 100-year floodplain. The basic requirement of these regulations is that new development and substantial improvement (50% or greater than current market value) of existing development cannot occur in the 100-year floodplain without a floodplain development permit being obtained. Obtaining such a permit requires compliance with engineering standards. In communities like Walsh that have no detailed floodplain information with water surface elevations, the engineering standards are general. Structures must be built with materials and techniques that "minimize flood damages." In communities that have detailed floodplain information the standards require that residential buildings must be elevated above the 100-year elevation and that non-residential buildings must be either elevated or floodproofed. Other structures or projects (i.e. bridges, culverts or fill) must be constructed in a way that minimizes the potential increase in flood elevations they may cause. Flood Insurance Flood insurance is made available to owners and occupants of floodprone property through the federal govemment's National Flood Insurance Program (NFIP). The NFIP insurance is available to anyone in any community that participates in the NFIP. At the time of this publication, Walsh is participating in the NFIP. The town entered the program on June 30, 1976. Communities become participants by adopting floodplain regulations, adopting an NFIP map (if one exists) and agreeing to cooperate with the federal government in the local implementation of the NFIP. Property owners and occupants can then contact an insurance agent familiar with the NFIP (perhaps their own agent) and purchase insurance through that agent, much like they would purchase homeowner's insurance. Brochures and other information regarding the National Flood Insurance Program can be obtained by calling the Regional Office of the Federal Emergency Management Agency (FEMA) in Denver at (303) 235-4830. Floodnlain Manal!:cment Alternatives Besides floodplain regulations and flood insurance, there are many actions that can reduce the risk of flood damage in a community. Generally these actions fall into two classes, structural actions and non-structural actions. Structural actions involve the construction of facilities to separate floodwaters from property that is at risk. They include construction of improved channels, enlargement of crossing structures (bridges and culverts), levees and floodwalls, reservoirs and ponds to detain floodwaters and diversion channels and pipes to direct waters elsewhere. Non-