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<br />19'7,) <br /> <br />'-~ <br /> <br />(Invontcry ot physico.l fo.ctors) <br /> <br />Dro.il1ll!!;C <br /> <br />Sur fo.co dro.il1llgo ,throuGhout nost of tho Coloro.do Cc.no.l lc.nd is <br />o.doquo.to; howevor. a faw plo.cos in tho rivor botton nood additionc.l <br />sur fo.oo droi MgO. Lo.nd in tho vioini ty of Lakc Licrodi th ~.s very , <br />littlo slopo and has poor subsoil drainage.' dcopcgo occurs in rnnny <br />plo.cos o.t the preaont tit.10. In tho highor arec.s, subsurfaoo dro.imgo <br />is neodod in areaa having hoo.vy Soil. ilhOl:.D hoavy subsoil is presont. <br />0. aorious dro.ino.go problon exists. At prosont thero c.ro =y drainngo <br />di tcho s in tho Ordway-Sugc.r Ci ty o.roo.. <br /> <br />Draino.go works for snnll fiolds ond areo.a of irriguted lund undor <br />tho Booth-Orchard Grovo and Excolsior Ditohes would be expensive in <br />P!"oRo~tj. on tt? ~Q_a~!".oage ,to, be benofi_to.d_ r.no.. r.ro. thoroforpc! not <br />gener,o.lly rocomendod., , <br /> <br />. '- <br />Salinity _cnd O:lkr.liIifty <br /> <br />, <br /> <br />High salt concentrations excoeding .5 poroent total soluble salt <br />content aro noat provalent in c,rons having heavy soils and belovI tho <br />Pierre shale areas. The c'l<ljority of these nrcc.s have adequate surfaeo <br />drail1llgo, but doo to tight conpact subsoil toxturo. subsurfc.co drainngo <br />is poor c.nd salinity has incroased. <br /> <br />. <br /> <br />Thoro aro 5 acres ef irrigntod land undor tho Booth-Orchard Grovo <br />Ditch. l7 acres uncor the'Exeelsior Ditch, end 3,060 neros under the <br />,Colorado Cc.ncl classified c.a Class 6 cnd undesirable for further irri- <br />gation because of ,nlkalinity, salinity, and poor drainage. <br /> <br />Spocial problODS <br /> <br />Tho allevintion of seopago and c.lkali conditions is a serious pro- <br />blon in parts of the area. <br /> <br />. <br /> <br />. -.----- <br /> <br />15 <br />