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<br />l.fz,-lf9ltlon requ.lreme.nt <br /> <br />r:tr~ct:l.VC' .e>1'1.'l.:.lp1'...tion d~r:~nc the ~"Gvln~ m~Qf,lOn \U.1.ii <:omput.ed <br /> <br />by months based on pcrcenc.a.gl-J... .:of effectiveness applied to incrementa <br /> <br />of montb.l1' l....lnfaU as outlined in l~l~tion Manual Volume IV) <br />\iute~ St.udies, Part 4, Ch&ptier 1, .1.13. Monthly effective -p~eipi... <br /> <br />tat100 Wl\B tot.aled ~or the ~row1ng season and deducted trom the <br /> <br />ar..oual consumpt.i \1<." uee requi:t-emea't in order tel dart ve the w:mual <br /> <br />crcrp 1rription 1"C'luiremeat. Annual crop irrigation requi%'emente <br /> <br />u.l)i(~ 'this procedure devie.teil .. me.:K1.m'Iml of only 0.04 t from annual <br /> <br />crop irrigation 1"~~quirelents derived by d.cd.uct1ng monthl.y effective <br /> <br />p~1p1tation from monthly consumptive use 1"eqplremente . Preci.pl- <br /> <br />tat10n records for the Ht:ehntt station vere used. tor the 1937...194-0 <br /> <br />))0.1'104 and prooipi.tation ree()!'ds at the 'l'r1n1da4 C .A..A. Airport <br />dear Hcclme v~re 'ilsed tor thEI 19q,9-1957 period.. Trinidad. pt'eeip1- <br />tatlon records tor the per1O<ll 1925-1936 'lJel"e corrected to tho Hoehne <br />area by a cor1"ee't1on factor elf J2.8 percent detendned by comparisQn <br /> <br />of precip1 tat.1on date. trom aU.:';. ";;leather IAAreoo publication, <br /> <br />"Cl1matolog1cal :).tfIma1"y of the United 3t&tes-..:';upplE!'l.llent for 1931 <br /> <br />through 1952'. 'lb.e basis for this as follow: <br /> <br />Tr1nldM neJli.il Qunuul precipitatiQn <br />for PEiriod of record.. . . . . . . <br />1!oehne 'Uta!. e.nnuJ.:l. preclJ)1tation <br />for period of record. . . . . , <br /> <br />16.33" <br /> <br />. . 13.9i~" <br /> <br />Ta.ble 3 (<,hovs ettectJ.ve he6.t unit.s, consu:q~t.ive une require- <br /> <br />;nenta I efia-cti va precipi tatiOj,l &lid crop irr1gation requirements <br /> <br />during the growing SC&"Jon tor each year ot tbe 1925-1g57 study <br /> <br />period. <br /> <br />1 <br />