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<br />Location _JAnnuo.l~Ho*: ,f 190L,.
<br />
<br />:l,OOO-year
<br />,~* 1925 :f'requency
<br />
<br />
<br />fiD1863 Although some damages may be incuned at the Nine Mile
<br />and Highland diversion dams below, no estimate is included there-
<br />
<br />for. John Martin Dam, proceeding to construction in the Arkansas
<br />
<br />Valley, will, it is reported, eliminate damage in the area below
<br />
<br />from floods of this type Lend extent.
<br />
<br />Summary of Estimated Potential Flood D';cmages
<br />
<br />Above Trinidad : $ 4,000:$
<br />In Trinidad .3,000:
<br />Below Trinidad..L....- 5,000:
<br />
<br />* 65-year frequency'.
<br />lHf l5-ycur frequency.
<br />*"JHf Avorage for ~\ll floods
<br />
<br />.
<br />.
<br />100,000:No 8stimate:$ .300,000
<br />700,000: $ 44,000 .3,000,000
<br />.30l,000: 4ih2Q.Q: 770.000
<br />
<br />from 1- to lO-year frequency.
<br />
<br />Estimo.ted Average Anl~~Lood Damav.e
<br />
<br />.
<br />
<br />These are obt:tinul from flood damage curves for uncontrolled
<br />
<br />flow based upon tlw foregoing data plotting flood peak agdnst esti-
<br />
<br />mated flood damage and selecting thE' estimated dUllinge therefrom for
<br />
<br />floods of selected frequency as follows:
<br />
<br />1'ot(1l Estimated Flood Damage
<br />
<br />Flood Frequency Number of Damage per : Total
<br />Years Floods Flood Damages
<br /> :
<br />l* 900 $ 12,000*:$10,800,000
<br />10 60 .32,000 1,920,000
<br />25 20 280,000 5,600,000
<br />50 10 860,000 8,600,000
<br />100 6 l,600,000 9,600,000
<br />250 1 2,800,000 2,800,000
<br />.333 1 2,900,000 2,900,000
<br />500 1 3,210,000 3,210,000
<br />1,000 1 4,0'lQ....YOO 4.0'70,000
<br />Total 1,000 :$49,500,000
<br />Average Annual . :$ L,9.500
<br />.
<br />
<br />.
<br />
<br />* All floods from 1.- to IJ-year frequency
<br />
<br />77
<br />
<br />\
<br />
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