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<br />6
<br />
<br />Some narrowleaf cottonwood trees are adjacent to
<br />stream channels. Elevation is 6,200 to 8,60') feet. The
<br />average annual precipitation is about 15 to 25 inches,
<br />the average annual air temperature is 40 to 50 degrees
<br />F, and the average frost-free season is 60 10 130 days.
<br />This unit makes up about 1 percent of the survey area.
<br />It is about 50 percent Collegiate soils and 15 percent
<br />Manzano soils. The remaining 35 percent is components
<br />of minor extent.
<br />Collegiate soils are deep and somewhat poorly
<br />drained. They formed in alluvium derived dcmnantly
<br />from sedimentary rock. The soils are medium textured
<br />and are underlain by coarse textured matenal at a depth
<br />of 31 inches.
<br />Manzano soils are deep and well drained. They formed
<br />in alluvium derived dominantly from sedimentary rock.
<br />The soils are medium textured throughout.
<br />Of minor extent in this unit are Breece, Noden,
<br />Willowman, and Nunn soils.
<br />This unit is used for irrigated hay and pasture and as
<br />rangeland.
<br />If this unit is used for irrigated hay and pasture, the
<br />main limitations are the short growing season and the
<br />high water table in the Collegiate soils.
<br />Wildlife such as mule deer, mourning dove, cottontail,
<br />jackrabbit, and waterfowl inhabit this unit. Waterfowl
<br />inhabit the bottom land along the Cucharas and
<br />Huerfano Rivers. The wetness of the soils allows the
<br />production of wetland plants that provide nesting areas
<br />and protective cover. Areas used as cropland provide
<br />additional food.
<br />This unit is poorly suited to homesite devalopment.
<br />The main limitations are the hazard of floodin(J on the
<br />Collegiate and Manzano soils and the high "'a.ter table in
<br />the Collegiate soils.
<br />
<br />soils on plains
<br />
<br />This group consists of four map units. It makes up
<br />about 37 percent of the survey area. The soils in this
<br />group are nearly level to very steep. The nati_ 13
<br />vegetation is mainly grass, but there is some pinyon and
<br />juniper. Elevation is 5,500 to E;,600 feet. Th" average
<br />annual precipitation is about 11 to 16 inches, the
<br />average annual air temperature is 48 to 54 degrees F,
<br />and the average frost-free season is 120 to 1135 days.
<br />The soils in this group are shallow to dee p and are
<br />well drained. They formed in material derived from mixed
<br />sources.
<br />Most areas of this group are used as ran;Jeland. A few
<br />areas are used for irrigated hay and pastum and as
<br />non irrigated cropland.
<br />
<br />3. Wiley-Baea-Kim
<br />
<br />Deep. well drained, gently sloping to modelaMly sloping
<br />soils; on uplands
<br />
<br />This map unit is in the east,arn part of the survey area.
<br />Slope is 1 to g percent. The ,egetation is mainly grass.
<br />
<br />Soil survey
<br />
<br />Elevation is 5,500 to 6,500 feet. The average annual
<br />precipitation is about 12 to 15 inches, the average
<br />annual air temperature is 50 to 54 degrees F, and the
<br />average frost-free season is 125 to 165 days.
<br />This unit makes up about 19 percent of the survey
<br />area. It is about 30 percent Wiley soils, 20 percent Kim
<br />soils, and 10 percent Baca soils. The remaining 40
<br />percent is components of minor extent.
<br />Wiley soils are gently sloping. These soils are deep
<br />and well drained. They formed in loess. The surface
<br />layer is medium textured. The subsoil is moderately fine
<br />textured. Below this, to a depth of 60 inches or more,
<br />the soils are medium textured.
<br />Kim soils are gently sloping to moderately sloping.
<br />These soils are deep and well drained. They formed in
<br />eolian silt and fine sand derived dominantly from wind-
<br />deposited sediment. The soils are medium textured
<br />throughout.
<br />Baca soils are gently sloping. These soils are deep
<br />and well drained. They formed in loess. The surface
<br />layer is medium textured. The subsoil is moderately fine
<br />textured. Below this, to a depth of 60 inches or more,
<br />the soils are medium textured.
<br />Of minor extent in thiS unit are Fort Collins, Olney, and
<br />Vona soils and somewhat excessively drained Otero
<br />soils.
<br />Most areas of this unit are used as rangeland. A few
<br />areas are used for irrigated hay and pasture and for
<br />nonirrigated wheat.
<br />If this unit is used for irrigated hay and pasture, the
<br />main limitations are lack of readily available water, the
<br />moderately slow permeability of the Baca soils, and
<br />steepness of slope on the Kim soils. If this unit is used
<br />as nonirrigated cropland, the main limitations are the
<br />hazard of soil blowing and insufficient precipitation for
<br />annual cropping.
<br />Wildlife such as antelope, cottontail, jackrabbit, coyote,
<br />and limited numbers of scaled quail and mourning dove
<br />inhabit this unit. Areas used as cropland provide
<br />additional food, and windbreaks and environmental
<br />plantings provide additional cover.
<br />This unit is well suited to homesite development. It has
<br />few limitations.
<br />
<br />4. Travessilla-Roek outcrop
<br />
<br />Shallow, well drained, gently sloping to velJl steep salls,
<br />and Rock outcrop; on ridge tops and canyonsides
<br />
<br />This map unit is in the eastern part of the survey area.
<br />It is characterized by deeply dissected canyons. Slope is
<br />1 to 45 percent. The vegetation on this unit is mainly
<br />grass, pinyon, and juniper. Elevation is 5,500 to 6,200
<br />feet. The average annual precipitation is about 11 to 15
<br />inches, the average annual air temperature is 50 to 54
<br />degrees F, and the average frost-free season is 135 to
<br />165 days.
<br />This unit makes up about 4 percent of the survey area.
<br />It is about 55 percent Travessilla soils and 10 percent
<br />
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