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<br />I~ <br /> <br />Fig. 2b. Effect of Le\lee ond Floodwoll <br /> <br /> (WITH WITH), <br />5 5 ,,- <br />, <br /> , <br />I I <br /> I <br />I I <br />, , <br />1 , <br />$ Q \.0 , .001 <br /> <br /> <br /> <br /> <br />1.0 <br /> <br />, <br /> <br />.0001 <br /> <br />levees and floodwal1s are 1esioned to prevent floodfno in areas ad1acent. to <br />a river or flood plain. Thev nrovide a direct ~Ins of flood protection fn <br />that they can be located wnere neede~ and can act to conffne flood waters <br />to the channel UP to the desfqn flow. The direct planned for effect is there- <br />fore a truncation of the staoe-damaoe relationshio helow the rtesfQn -flow rate. <br />The river stace can be raised for a oiven flow rate 1f the flow conveyance <br />area 1s sionificantlv reduced bv the measure. The stane.flow relationShip <br />can therefore he incidentally affected. <br /> <br />Hfqher flow rates for a specific event can be induced d~strea. 1f a 510"1f- <br />feant amount 1f flood plafn stora~e 1s eliminated by the measure. The flow- <br />frequency relationShip downstream can thus be incidentallY affected. The <br />sketch displays the impact of levees or floodwalls on the e,aluation 'unc- <br />tions at a point in the downstream reaches of a Droject area. <br /> <br />EXHIBIT I <br />40FI2 <br />