Laserfiche WebLink
<br />;1 <br />I. <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />.. <br />I <br />I <br />I <br />I <br />I <br />I <br />.. <br />I <br />I <br /> <br />CURRENT METHODS FOR ESTIMATING DAMAGE <br /> <br />Many methods are used to calculate direct damages. The author <br /> <br />has chosen to narrow the methods down to four techniques. They are <br /> <br />historical damage curves, aggregate formulas, synthetic depth-damage <br /> <br />curves, and empirical depth-damage curves. <br /> <br />Eckstein (1958) demonstrates the use of historical damage curves <br /> <br />with the following figure: <br /> <br />Figure #1 <br /> <br />, . <br />'" : <br />!:~!: <br /> <br />.. f-"" <br /> - V <br />.. ...... <br /> ...-- <br /> ............tn.n_ u <br /> .....--- <br /> /' STAG(-DAIlIAGI: CURVE <br /> .-r u.. <br /> V <br /> I , <br /> '1-''''1- <br /> ........"i'""'~ I I I <br /> . - - " - . <br /> <br />. <br />, . <br />k~ ~ <br />,d <br /> <br />. <br />:d; <br />.Ie :: <br />. <br />l1 i <br />n . <br />, . <br />. <br /> <br /><':... <br />~ <br />~~. .. <br /> <br />~.__ ___ .~... PUAMo <br /> <br />. <br /> <br />By using various hydrologic techniques, a discharge frequency curve <br /> <br /> <br />can be developed and by using hydraulic techniques, a stage frequency <br /> <br />curve can be developed for different stream reaches. By combining the <br /> <br />stage-frequency data with the stage-damage data a damage-frequency curve <br /> <br />can be established as shown in the following figure: <br /> <br />9 <br />