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<br />I <br /> <br />I <br /> <br />I <br />I <br />I <br /> <br />vided on the Flood Hazard Area Delineation <br /> <br /> <br />velocities would range between and 12 <br /> <br /> <br />year event in the Basin area. <br /> <br />Drawings. <br />feet per <br /> <br />The drainageway <br />second for a 100- <br /> <br />I <br />I <br /> <br />Water flowing at a rate of 6 to 8 feet per second or more will cause <br /> <br /> <br />severe erosion of streambanks and is capable of transporting large rocks. <br /> <br />Velocities in the range of 6 to 8 feet per second could erode fill around <br /> <br /> <br />bridge abutments. Water flowing at about 2 feet per second or less will <br /> <br />deposit debris and silt. <br /> <br />SUMMARY <br /> <br />I <br />I <br /> <br />This report has identified the probable flooding I jmits of the 100-year <br /> <br /> <br />flood. As mentioned previously, floods of greater magnitude can occur <br /> <br /> <br />and flooding beyond the extent of the limits shown in the report can <br /> <br /> <br />also occur due to other factors such as tributary flow and new develop- <br /> <br />ments within the flood plain and basin not presently anticipated. <br /> <br />APPENDIX A <br /> <br />I <br /> <br />BASIN PARAMETERS <br /> <br />I <br /> <br />Both structural and non-structural methods may be used to alleviate <br /> <br /> <br />the flood problems. The non-structural measures consist of flood- <br /> <br /> <br />proofing, building permits, land use regulations and flood plain zoning. <br /> <br />I <br /> <br />I <br /> <br />Presently the Study Area Drainage Basin is considered to have a moderate <br /> <br /> <br />to low flood damage potential. The preservation and protection of the <br /> <br /> <br />flood plains and adjoining lands will serve to maintain and even reduce <br /> <br /> <br />the present flood hazard. <br /> <br />I <br /> <br />I <br />I <br />I <br />I <br /> <br />I <br /> <br />12 <br />