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<br />002580 <br /> <br />Flood Prevention <br /> <br />~~'lli'gji.,.,."~.;wg~....'W~]t,\';t.'~'.,,::~,'~-;:~--'}:Yr.;_'.:-,~"i: f.'::';.;':,7;':;?':;:''''}.:''''~;,{'::..S'~,.:<:':;:{,1J.;!f~i~.;'$,,,.,;,,'.. -.",,'i;{~~~~~~t."t.W~~~ <br /> <br /> <br />Flood prevention includes land <br />treatment, non structural and structural <br />measures to reduce the damages caused by <br />flooding. <br /> <br />Land treatment measures protect the <br />watershed, and reduce the rate and/or . <br />amount of runoff and erosion. Thus, <br />downstream flood peaks, sedimentation <br />and' the delivery of other damaging <br />materials carried by floodwater are <br />reduced. Land treatment measures are of <br />the size, complexity and cost that <br />individual or small groups of land users <br />would normally include in their <br />conservation plan and install through <br />ongoing conservation programs. <br /> <br />Nonstructural measures alleviate flood <br />losses by modifying the vulnerability of <br />land, people and property to flood damage <br />or by reducing the impacts of flooding. <br />Nonstructural measures for flood <br />prevention include zoning, building codes <br />or other regulatory actions, land <br />acquisition, relocation, flood proofing and <br />flood warning and response systems. <br /> <br />Structural measures are those larger, more <br />complex and often costly practices that require <br />group action to plan, install, operate and <br />maintain. Structural measures include dams to <br />retard floodwater, channel work, levees, dikes, <br />desilting basins, floodways and floodwater <br />diversions. <br /> <br /> <br />D"....^ Ii <br /> <br />Flood prevention may <br />also include structural <br />measures for land <br />stabilizatj.on to prevent the <br />destruction of land and to <br />reduce the movement of <br />sediment into stream <br />channels and reservoirs. <br /> <br />Left: Flood Prevention <br />Channel. . <br />