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<br />-e <br /> <br />1-660 <br /> <br />( Pi''-ojoc;t-1nnds-) <br /> <br />Soils <br /> <br />Tho :>rkansas River Valley bottom soil is alluviu!.1. In tho north- <br />wast cornor Piorro shale is found. whereas south of I.!nnzanola, Vronnn, <br />and Rocl<y Ford thero are scattorod areas of the OGallala fornntion. The <br />rO;:Ulindor of the llrua is undor1c.in by tlombers of the Niobrarc. Group. <br /> <br />e <br /> <br />Soils of the aroa vary frOla fino sandy loan to clay. Tho texturo <br />in llny givon locality is hrr;ely dependent upon tho undorlyinG parent <br />forlOation. Tho prodoninato soil texturo is olAy loa,.l which is found <br />south of and botween Roc!:y Ford and La. Junta.. North of'Rocky Ford, c. <br />largo body of clay soil is found. i.bout nnlf of tho land with clay <br />loan or clay soil is Cluss 2 land. Thi's soil has Good depth and Good <br />~t9!~h~dj~G Cllpacity, b~t ~hc porneability is only fllir. Betweon <br />, :Rocl~ _Ford-:o:n((:.t'nO-~W9'"~t-=-O!l(1" o.f-the~llroB.-\vido'vnric. tions '-in'-tho~soil-- <br />:.' _toi<tw'-u::o'ccur~'--'-'.oI.ol1d~'J:;y:inf.. "c'sll~rto:'i:iiStn--ncosolltn~:oI ~)1e 'rivor.=tsO'prin- <br />, cipllll.yo:flno-snndy lontl"wij;l1sj:lnli;r-;.roC\S _oC~lay 'loan -c.n-d- cray~Fino <br />: ~ _ us"ngy:.lollu"-tsc derivod~l:irGcly~fro;'~';tho":Ogo:rilllii_ f6mati 6ri~;t:.i"iJ:~tho=-c.i(\y,--- <br />-_:-:l.oa!'i- a:nd'::.cl-ay-; -,-tion-thci' Ni"6bro.f,;.' Croup;"- -,Fnr.thor, seuth -of-_thii'of'iho.:;..:-=c" <br />sandy loc.n sO'll,-tho clay loaT.\ afld-clllY siSTlTd:ppenrod-iU"C.,-no.jor:l.ty-'-- <br />of the soil profilos. Prc.ctically all fino sandy loan soil and clay <br />loan soil in this part of the aroa is Class 1 land. Thoso soils aro <br />gonorally vory productivo, havo Gcod dopth, good ,mtor-holding capacity, <br />c.nd fair to Good porneability. <br /> <br />~- <br /> <br />-- <br />------- <br /> <br />Tho land in Class 2 has a hoavior toxturo particulnrly in tho <br />subsoil. <br /> <br />Tho land in Class 6 is found in the rivor bctton llroas und in <br />narrow strips alonG tho :.pishr.po. Crook, Patterson Hollow; Tinpns Crook; <br />llnd Crooked 1.rrro-yo, This le.nd is unproductive, ""avy, c.nd poorly <br />drained. <br /> <br />TopOGraphy <br /> <br />The topography of the lowor pe.rts of tho e.ree. vtlrios fron rough to <br />lovel. Broa!;s are found ulon" tho edee of tho ri'l"or botten and also <br />lllonp; tho tributo.ries. <br /> <br />Tho river bottoi:l and tributary valleys nro cut into sr..o.li fields, <br />and ho.vo no uniforr,lity of topoGraphy. Somo fiolds o.ro lovel and SOI:Ul <br />rouch. There aro no larGe bodies of irriGated laud in tho rivor bottom. <br /> <br />-,-e-- ,- - ___m__, -- <br /> <br />29 <br />