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Property zoned as a flood plain (open area) and decded to a governmental entity would require maintenance expenditures of ahout $3,500 to $4,500 pcr mile of channcl reach annually along Big Dry Creek. This expenditure would be adequate for performing routine maintenance, such as mowing and trash cleanup and removal. \\'i thout proper maintenance and management, the flood plain area could become a site for refuse disposal by careless citizens, vegetative growth would accelerate, and the general appearance of the flood plain would become a detriment to the community. C. ) Plan No.2 - Structure and Chann:,:} Improvements (['Lite 7\0. 7, VA 1 ume 2 ;Dr aw i ng s ) ---------~~--"~""-"-"---~- l~is plan is based upon tbe making of cxtensive improvement or tl10 replacemerlt of existing structures along Big Dry Creek. These proposed improvements and estimated costs arc tabulated in Table 1\'-4. These improvements arc designed to eliminate or greatly reduce potential flood damagc and property loss, as tabulated In Table 1V-3. Plan No.2 - Structure and Channel Improvements illustrates the reduction in the flood plain from a HIO-year frequency storm of six- hour duration and proposed land use cenditions as a result of the im- provements proposed in this plan. As in Plan No.1, the reduction in the 10- and 25-year flood plains "ere not indicated; however, the COII1- puted hydraulic results arc available in the filcs of the District. In this plan, noticeable reduction in the width of the flood plllin occurs at points of maxil1lum flood c1amage potential. The areas of Ill;l.!!)r improvement arc in channel reaches one, fivc, and seven. The high potential property damages in chanllel l~cach one pertain mainly to the - S~-