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<br />-- <br /> <br />I~- <br /> <br />, <br /> <br />. <br /> <br />--- .- <br /> <br />1961 <br /> <br />(Inventory of physical factors) <br /> <br />Only thoso portions of tho nonirrigatod area ~ving desirablo to- <br />pography havo beon classified as arable. In genornl. those crons ceuld <br />be developod for orchard farming without hoavy ellpenses for lovoling <br />and proparation for irrigation. <br /> <br />Draimp;o <br /> <br />Surfcco drainage is good oxcept in tho aroa northoast of Canon City <br />whoro a few s~ll aroas aro too flat for good surfaco drainago. Ono <br />largo drainage ditch bogins north of Canon City and passes through tho <br />town to tho rivor. Subsurfaco drainago in tho Cenon City area is poor <br />becauso of tho tight clay subsoil. In tho Ponroso aroa shall0\1 topsoil <br />and rock outcrops prosont subsurfaoe draim.:;e probl.ons. dith tho applica- <br />tion of an r'I1>le "ater supply, subsurface dr~illage :;,n ~one ef _tho~irr.iga- ~ <br />ted 'areas," particularly th6CancnCfty areu, would provo inadeq~t<:l'--and <br />o.dditiort.o.l fc..cititios would bo roquirod.. -_=--...;-=-=-_- -- <br /> <br />.----- <br />-- --- <br /> <br />Salini ty and nlblinity <br /> <br />Salinity i. high in the Pierro shule seils in the western part of <br />tho Canon City district. Native vogotation is greusowoed. sn1tbush. <br />and somo shndscale. Soil tests frpm the Pierro shulo soil showod a <br />total solubl" suIt contont of frOl1\ .18 te .23 percent. <br /> <br />Salinity of seils in tho eastorn p~xt ef POl1rOSO district is neg- <br />ligiblo. In 12 soil tests the to~l solublo sr~t content did not ex- <br />ceod .14 porcent and the pH did not exooed 8.6. The whiteness of the <br />soil is due to the high line oontent clorivcd fron the' underlying Thlpas <br />linostono. Sene alknlhation has dovclcpo,l itT.1oc'.i~.tely east nnd north <br />of Canon Citywhero botter surfaoo nnd subsurfaoe drainage is neoded. <br /> <br />Spooial problons <br /> <br />In tho wostern purt of tho aroa tho topoGraphy is sufficiently gontlo <br />for intonsive irrigation, but subsurfaco crainage is poor. Inmodiately <br />wost of Oil Creok in the urea northeast of Canon City, leck of drainngo <br />and rosul~~nt alkalization of soils is a problom. <br /> <br />, ,-- - -- ,-9 <br />