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<br />e <br /> <br />property in the most traditional way. Representative projects include the <br />acquisition and evacuation of an 82 unit mobile home park at the <br />confluence of Ralston Creek and Clear Creek and its re-use as a city <br />park, and the acquisition and demolition of 14 single and multi-family <br />flood prone structures in the Boulder Creek floodplain in cooperation <br />with both the City of Boulder and the school district. <br /> <br />The Maintenance Program also has a maximum 0.4 mill levy <br />authorization but no matching fund requirement. This program has <br />established a preservation fund which starts each year at the $600,000 <br />level, which is available for short fuse acquisition of targets of <br />opportunity, such as willing sellers of previously identified desirable <br />acquisitions. Representative projects include the acquisition of several <br />individual houses offered by willing sellers, as well as the prevention of <br />unwise development in the floodplain through acquisition of vacant sites <br />that could otherwise be developed. <br /> <br />e <br /> <br />The South Platte River Program has a maximum 0.1 mill levy <br />authorization and requires a 25% match from local government sponsors <br />for capital projects and no match for maintenance projects. The program <br />acquired an abandoned filling station site in Denver and turned it into <br />permanent open space. It has also helped private property owners with <br />bank stabilization activities in return for flowage easements which <br />assure permanent open space along the river. <br /> <br />3 <br /> <br />DeGroot <br /> <br /> <br />Through these three programs the acquisition and appropriate <br />after-use offlood prone properties has become an important tool in the <br />District's efforts to reduce existing flood hazards while keeping new ones <br />from being created. Examples of successful projects follow. <br /> <br />Valley View Mobile Home Park. City of Arvada <br /> <br />e <br /> <br />The Valley View Mobile Home Park was located totally within the <br />100-year floodplain of Ralston Creek at its confluence with Clear Creek. <br />Ralston Creek has a drainage area of91 mi2, and a 100-year peak <br />discharge of almost 10,000 ft3/sec at its mouth. The mobile home park, <br />which had been located at the lower end of Ralston Creek for many years, <br />had gradually been experiencing more frequent flooding as the upper <br />basin became more fully developed. The existing channel through the <br />mobile home park was not even capable of handling the 2-year event, and <br />the park had been flooded most recently in 1989 and 1991. <br /> <br />In 1995, the City of Arvada embarked on the expansion of a major <br />arterial street in the Ralston Creek floodplain upstream from the mobile <br />