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Huerfano County Area, Colorado 55
<br /> The potential plant community is mainly pinyon and depth is 60 inches or more. Runoff is medium, and the
<br /> juniper and an understory of Indian ricegrass, hazard of water erosion is moderate to very high.
<br /> mountainmahogany, blue grama, and muttongrass. Other The Midway soil is shallow and well drained. It formed
<br /> grasses that characterize the unit are Scribner in residuum and colluvium derived dominantly from
<br /> needlegrass, skunkbush, and sideoats grama. The shale. Typically, the surface layer is grayish brown clay
<br /> potential production of the native understory vegetation about 3 inches thick. The next 3 inches is clay. Below
<br /> in normal years is about 200 pounds of air-dry vegetation this is clay about 12 inches thick. Platy shale is at a
<br /> per acre. depth of 15 inches. The soil is moderately alkaline and
<br /> Chaining the pinyon and juniper can increase the slightly saline throughout.
<br /> production of understory forage plants. Following Permeability of the Midway soil is slow. Available water
<br /> chaining, proper grazing management is needed to capacity is very low. Effective rooting depth is 10 to 20
<br /> reduce erosion and to lengthen the lifespan of the inches. Runoff is rapid to very rapid, and the hazard of
<br /> clearings. Range seeding is most successful if done in water erosion is very high.
<br /> conjunction with chaining. Suitable seeding mixtures can This unit is used as rangeland.
<br /> include crested, pubescent, and intermediate The potential plant community on this unit is mainly
<br /> wheatgrasses and blue grama. sideoats grama, blue grama, and Indian ricegrass. Other
<br /> Woodland products such as firewood, high-quality grasses that characterize the unit are needleandthread
<br /> fenceposts, pinyon nuts, and Christmas trees are and sand dropseed. The average annual production of
<br /> available on this unit. Mature stands of trees can air-dry vegetation is about 700 pounds per acre. If the
<br /> produce 8 to 12 cords of firewood per acre if all trees condition of the range deteriorates, rabbitbrush,
<br /> are removed. Removing standing dead trees and threeawn, yucca, and cactus increase. Livestock grazing
<br /> opening the canopy generally enhance reproduction and should be managed to protect the unit from excessive
<br /> promote the growth of grass and younger trees. The use erosion. The main limitations for seeding are
<br /> of tree spades for transplant removal is severely limited droughtiness and very gravelly material near the surface
<br /> by the cobbles and stones in the soil. of the soils.
<br /> This unit is well suited to homesite development. If the This unit is poorly suited to windbreaks and
<br /> density of housing is moderate to high, community environmental plantings. The main limitations are the
<br /> sewage systems are needed to prevent contamination of salinity, limited rooting depth, and slope of the Midway
<br /> water supplies as a result of seepage from onsite soil and the droughtiness of both of the soils in the unit.
<br /> sewage disposal systems. If the soil in this unit is If this unit is used for homesite development, the main
<br /> excavated, cutbanks may cave in. limitations are slope in the steeper shaly areas and
<br /> This map unit is in capability subclass Vlls, shrink-swell potential. The gently sloping areas of the
<br /> nonirrigated. It is in Pinyon-Juniper woodland site. Schamber soil are well suited to homesite development.
<br /> Effluent from septic tank absorption fields can surface
<br /> 77—Schamber-Midway complex, 3 to 25 percent in downslope areas and thus create a hazard to health.
<br /> slopes. This map unit is on hills, terrace edges, and side This map unit is in capability subclass Vlls,
<br /> slopes. The native vegetation is mainly grass. Elevation nonirrigated. About 75 percent of the unit is in Gravel
<br /> is 5,500 to 6,600 feet. The average annual precipitation Breaks range site, and 25 percent is in Shaly Plains
<br /> is 12 to 15 inches, the average annual air temperature is range site.
<br /> 49 to 54 degrees F, and the average frost-free period is
<br /> 125 to 155 days. 78—Tisworth sandy loam, 2 to 8 percent slopes.
<br /> This unit is about 65 percent Schamber sandy loam This deep, well drained soil is on alluvial fans. It formed
<br /> and about 20 percent Midway clay. The Schamber soil is in alluvium. The native vegetation is mainly grass.
<br /> in the gently sloping areas and on hilltops, and the Elevation is 7,000 to 7,500 feet. The average annual
<br /> Midway soil is on the steeper side slopes. The precipitation is 11 to 15 inches, the average annual air
<br /> components of this unit are so intricately intermingled temperature is 43 to 45 degrees F, and the average
<br /> that it was not practical to map them separately at the frost-free period is 100 to 120 days.
<br /> scale used. Typically, the surface layer is pinkish gray sandy loam
<br /> Included in this unit is about 15 percent Kim fine sandy about 3 inches thick. The upper part of the subsoil is
<br /> loam on foot slopes and in drainageways. clay loam about 12 inches thick, and the lower part is
<br /> The Schamber soil is deep and excessively drained. It sandy loam about 9 inches thick. The upper 21 inches of
<br /> formed in alluvium. Typically, the surface layer is brown the substratum is stratified sandy loam and loam, and
<br /> gravelly sandy loam about 5 inches thick. The next 25 the lower part to a depth of 60 inches or more is sandy
<br /> inches is mainly very gravelly loamy sand. Below this to loam. The soil is moderately alkaline to a depth of 3
<br /> a depth of 60 inches or more is very gravelly sand. The inches and strongly alkaline below that depth. It is
<br /> soil is moderately alkaline throughout. slightly alkali-affected to moderately alkali-affected.
<br /> Permeability of the Schamber soil is very rapid. Included in this unit is about 20 percent Neville fine
<br /> Available water capacity is very low. Effective rooting sandy loam.
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