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<br />DD~5:7 <br /> <br />Precipitation <br /> <br />Pn'dpitalion varie~ from an avef<Jgc of about ~5 inch~s in lhl' \....l'stl'rn pari of the basin <br />to 30 inelll's in Ihe eastern parI. Extrl'mes of less Ih:m 1~ inches in j9J-l and owr 4S indll:s <br />in 1951 were recorded at some stalions.lIO\ I'reciritation occurs predominantly as rainfall and <br />over 80 percent falls during the growing S1'3S0n from April through (ktoht'r. Whitt' tht' annual <br />rainfall is favorably di<itrihutl'd with Tt'gard to thl' growing sl.'ason. the monthly distribution <br />within the season is poor. Little prt.'l.:ipilalion has bt'\,'n rr.:cordl,'d during some months while <br />othl."fS have h.'I.:eiveJ :'1'> much as 16 inches. TIll' Jwrage precipitation for June, which is llsually <br />the month of highest rainfall. is about 4.5 inches in the t'astern hall' of the ba~in. <br /> <br />Snowf;lll avcra~c~ about ~7 im:he~ annually ami ()l,;"l,;"ur-; pn:dominantly from Dl'cC'mbt'r <br />through .\Iar("h. The maximum annual ~nowfal1 n.'C(,nil.'J in the basin wa~ 65 incht'~ at York in <br />1960. <br /> <br />Precipitation figures for scveral stations in 1111.' basin wcrt' lI~t'J to dain:, Ihe isnhyets <br />shown on Figurt' S. The stations of lkatrice. Hastings anJ York wert' felt 10 be reprl'scntative <br />of the basin and climatological data for Ihem an' tabulalt'd in Ihe follo\\.'ing table. <br /> <br />TABLE I <br /> <br />CLIMATOLOGICAL DATA <br /> <br />TEMPERATURE 1 <br />(Degrees Fahrenheit) <br /> <br />PRE('lPITATION 1 <br />(Inches) <br /> <br />Mean ~1~x. 'Iin. ~1ean ~Iax. (Year) .\tin. (Year) <br />51.8 117 -33 Beatrice 28,58 48,4(j (1951) 15,96 (1955) <br />51.1 116 -30 Hastings 14.94 45.45 (1965) 13,88 (1943) <br />51.7 114 -31 York "6,98 36,04 (1965) 14.82 (1934) <br /> <br />If Tem~rature data for at lust 64 year period endi~ in 1960 <br />2/ ~ean predpil.ation for al In.$! 68 ~'e&r period endinf: in 1960 <br />Maximum and Minimum prel.:ipiution for 1931 - 1965 I'"iod <br /> <br />50L'RCE: E55", Dtputment of Commtrce <br /> <br />Historkal precipitation for York. near Ihe center of the basin. is shown for the 1931..{)5 <br />period in Figure 4. <br /> <br />15 <br />