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Lab 3 - ’ceieifiofflfiflablhtm i2 G‘ gmb SBIBIY p...

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Unformatted text preview: httpdlmasomgmuedufvumhouck’ceieifiofflfiflablhtm i2? ' G‘ gmb SBIBIY p lg MistVfited I! Gettingstarled & 1.3151 Headfihs CEIE 340 -- Water Resources Engineering ‘- Lab Assignment 3 September 27—28, 2006 Problem These data are the total axmual nmofi: Q 13310j acrefeet, fora particrflar stream forthe years 1955 to 1973: 1 Year 1955 19561957195319591960 1961 19621963 19641965 11361519671969.1969 [9'10 1971 19721913 Q 10.2 2.6.0 31.0 11.5 50.0 3.? 6.3 3.2. 3.1 23.? 63 10.4 512 4.? 149 3.6 2132 113 9.4 Assume a log—normal (Esm‘bulion and make a frequency analysis ofthe totaI annual runoff. Pint the data using the Wer‘b'ufi plotting position formula. (You may download log—normal probabifi'ty paperprovidedby www.m‘iebrflxom orby clicking here.) Bas ed on the frecuerrcy curve you find, estimate: I the jflyearannual low timoEE I the pmbabiiity that the total annual runofifin any one year W131 exceed 40 :(105 acrefeet 0 the probability that the total annual muffin any one yearwiL‘r be less than 4 x105 acrefeet Problem Assume that flood magnrtnfies are distributed by the Normal distribution, with a mean of 5,700 tie and a standard deviation of 1,100 efs. Fim‘] the emeedance prehabiei’ty and return period forfloe ds ofmagnrtude 7,400 2 cfs, and 5,100 cfs. This is pmblem 59 or} page 303. Problem Compute and graph the probability mass fimc‘lion ofthe number of lyear floo tie in a ten year period. 3 This is problem 5.56 on page 316. Solutions A sample solution is available by cfickhrg 11;“- Dmlrinads Conflele All {115 have finished dmniueding. . ' Untitled - Paint ...
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