|
<br />'• CO-CPA-1
<br />4/82
<br />(180-12-11)
<br />~...
<br />U. S. Dept. of Agriculture
<br />Soil Conservation Service
<br />CRiSEROATIQI PLAN MAP AND
<br />SOIL AND CAPABILITY MAP LFGF]1D SHEET
<br />Different kinds of Boil, range sites, or woodland sites are separated on thr.
<br />map by solid black lines, Within each area is ar. identifying symool or
<br />name. The following symbols are shown on your maps
<br />Symbol or Site Name
<br />19--Graypolnt gravelly sandy loam, 0 to t percent
<br />elopes. This is a deep, well drained soil on broad alluvial
<br />tans and terraces at elevations of 7,600 to 7,600 feet. It
<br />formed in alluvium derived principally from basalt. The
<br />average annual precipitation is shout 7 inches, the aver-
<br />age annual air temperature is about a1 degrees F, antl
<br />the host-tree season lasts about 95 days.
<br />Included in mapping are small arses o1 Derrick very
<br />cobbly sandy loam, Platoro loam, end San Arcacio sandy
<br />loam.
<br />1"yplcally, the surface layer is brown gravelly sandy
<br />loam about 5 inches thick. The subsoil is yellowish
<br />brown end pale brown, gravelly sandy clay loam about
<br />13 inches thick. The substratum, to a depth or more than
<br />60 inches, is sand or gravel.
<br />Permeability is moderate. Available water capacity is
<br />low. Runoff is slow, and the erasion hazard is slight.
<br />Effective rooting depth Is 60 inches or more.
<br />This soil is used for Irrigated Crops, Irrigated pasture
<br />and hayland, and range. Crops are email grains, alfalfa,
<br />potatoes, and other vegetables. Commercial fertilizer and
<br />manure need to be applied and plant residues returned
<br />to the soil. Irrigation methods suitable for this soil are
<br />border, furrow, and sprinWer. Sprinkler irrigation is well
<br />suited to most crops. The furrow method is suited to row
<br />crops. Border irrigation is suited to alfella, small grains,
<br />and pasture if runs are relaLvety short Lartd leveling
<br />may expose gravel in the more shaitow areas.
<br />The potential neUve vegetation Is dominated by Indian
<br />ricegrass, western wheatgrass, needleandthread, blue
<br />grams, winterfat, and lourv;ing saltbush. If the range de•
<br />teriorates, the proportions of Indian ricegrass, need•
<br />leandthread, end western wheatgrass decrease and the
<br />amounts o} blue grams, squ'vreiU311, threeawn,
<br />snakewead, end -abbitbrush increase. Undesirable
<br />weeds and annual plants Invade end become abundant it
<br />the range Condition becomes poorer.
<br />Seeding is generally not advisable because of low
<br />rainfall and low available water capacity. Deferred graz•
<br />rng, cross fencing, end stock water IaciliUes help prevent
<br />range deterioration and promote the growth of desirable
<br />plant species.
<br />t~ldlife on this soil includes openland and rangeland
<br />species, such as jackrabbit, cottontail, coyote, and var•
<br />lows rodents. Production of vegetation suitable for wildlife
<br />habitat is limited when this soil LS used es range and is
<br />notvrigated. Creating wildlife habitats on this soil re-
<br />quires proper management of livestock grazing. In irrigai•
<br />ed areas, crop residues from alfalfa, barley, and oats
<br />may be used try pheasant, waterfowl, and geese.
<br />Generalized Descriptions
<br />(Detailed descriptions are availably it
<br />your Soil Conservation Service office.)
<br />The greatest soil limitation for urban development is
<br />excessive seepage due to the gravelly substratum.
<br />Caving of cutbanks is a hazard when excavating. Septic
<br />lank systems end sanitary landfills may contaminate
<br />ground water because of the permeability of the soil.
<br />Community sewage system should be provided if the
<br />population density Increases. The capability aubclassos
<br />are IVs irrigated and Vlis nonirrigated.
<br />1~,E SITE: MOC°[3TAIN OUTWASH
<br />
|