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<br />.. '-'"--'~'",'_--^--,-.-, <br /> <br />/ie~t <br />\::J:I:" <br /> <br />BeCtj,ficat:!.en Qf 12':!.nch$ra Creek Clh...."leJ.. <br /> <br />Da.r:l,Dg 1936, a gagi:ng station was ma:!.nta1J:l.ed on 'lr1nchera Creek <br />about 1 mUe above its cGntluenceW1ththeBio Grande., ~ peakf'low <br />at the station was 40, cubic feet .Pl8l' lecond.As 1936 was about an average <br />year fGrf'law 11:1 stre8!lS head1:ng in th.elllOlUlta1ns flf the, ,east side of the <br />Valle7, it is reasOl!.a.\le to aS81llile that this flaw 'Will be Ox,per1enced each <br />~ar. D&e flows o:f '1'r:!.aChera Creek are contreJ.led 'bY" SIa1th Reservoir, <br />which is located about Umlles ups1lream:t'ran the c0J1t'l1l.ftlee w:l.th the Bie <br />Gran4e. NG tributar1es of ~ oonsequence enter the stream 'Delow au th <br />Rese1'VlJlir, henoe flows near the mouth are aamposed, pr1lllariJ.y-, o:f reser- <br />vQir spllilil, irri~ti<iltl wastes, and return flows :frCllll irrigated lands. <br /> <br />In order to drain ad,1a.eent lands, the reatified "hA."l"el should <br />kave a 'bottCllll W14th of 6 :feet W1th side slopes of 2:1, and a strUctural <br />depth o:f 10 feet. <br /> <br />D.r9-i.."Ig19ffi1...."'el <br /> <br />DIe ..h~"I:leJ.. :P&r&l.lel to the tEle of the eSC&1'];lDlent would kave <br />the ':fOlloW1ng capao1 ty requirements: <br /> <br />For draiD8lile flows <br />For artesian well flows <br />1'otal <br /> <br />15e.f.8. <br />36 a.:f.s. <br />51 c.:f.s. <br /> <br />For stozim 1'UIIlet:f <br />Gapacity- needed <br /> <br />10Cl.f.s. <br />01 c.:f.s. <br /> <br />.Ala adequate ph"""el to.. pronde the desira'Dle draiElage mIlbld <br />kave a bottom w:l.dth of 6 feet, Ii depth of J.Q feet, 1-1/2:1 side Slopes, <br />and a 'bQtt_grade of 0.002. <br /> <br />1'he estimated costs of Construating the contemplateQ, :f'aeillties <br />are as .shown in, ~Dle 1,.. , <br /> <br />.... ~ "" t~,: ") <br />'-, '. .;; j .) <br /> <br />'U <br />