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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Alternative G: Acquisition of Flood Prone Properties and Relocation of Occupants <br /> <br />The acquisition of private property located in the floodplain by local or state <br />governments is usually accomplished by either the outright purchase of the property in <br />question or the acquisition of land use easements. Outright purchase of property is usually <br />most feasible for undeveloped land or land containing few structures, residences or other <br />facilities. Once the flood prone land has been acquired it can become part of land use <br />patterns compatible with the goal of reducing the flood hazard to the public such as open <br />space, parks and public golf courses. <br /> <br />In most reaches of DFA 0054 in Adams County, acquisition of right-of-way will be <br />part of any structural alternative. In Reach 2, the purchase of the entire property <br />inundated by the 100-year flood along with limited structural improvement may be <br />economically desireable. These parcels could be left as open space or developed as a <br />public park. In other, more densely developed areas, acquisition of more property than is <br />necessary to construct flood control improvements would be too costly and is therefore <br />not considered further in this analysis. <br /> <br />Alternative H: Non-Structural Methods such as Flash Flood Forecast, Flood Warnin and <br />Evacuation lans <br /> <br />This alternative consists of establishing a procedure 'and strategies to be followed <br />in response to a flood threat. The U. S. Army Corps of Engineers recommends the <br />following, Reference J: ' <br /> <br />-A system for early recognition and evaluation of potential floods <br /> <br />-Procedures for issuance and dissemination of a flood warning <br /> <br />-Arrangements for temporary evacuation of people and property <br /> <br />-Provisions for installation of temporary protective measures <br /> <br />-Means to maintain vital services <br /> <br />-A plan for post flood reoccupation and economic recovery of the flooded area <br /> <br />Figure V-2 is a graphic representation of the interactions between the above com- <br />ponents. Flood forecast, warning and evacuation is more dependant upon hydrologic and <br />demographic factors than other non-structural strategies such as land use planning that <br />are related to the depth of flooding and the type of structure involved. This system is <br />best applied to situations where land use patterns are well established and it is not socially <br />or economically feasible to establish restrictive land use planning. <br /> <br />The problem with implementing a flood warning system on DFA 0054 is twofold. <br />First because the basin is small, the peak of the design floods occurs very quickly in all <br />reaches leaving a very short evacuation time. Secondly, it would require capital <br />expenditure by and cooperation between local governments while giving only marginal <br />economic'return, since flood damage would not be appreciably reduced. The principle <br />advantage of a flood warning system on DF A 0054 would be in organized evacuation of <br />people from the flOOdplain. At best, flood forecast, warning and evacuation should be <br />implemented in conjunction with other alternative plans which effectively reduce flood <br />damages. <br /> <br />V-3 <br />