|
GRAND COUNTY AREA, COLORADO 27
<br /> steep soil is on mountainsides and ridges at elevations loam. The lower 24 inches is red extremely stony clay
<br /> of 8,500 to 9,500 feet It formed in material weathered loam. The substratum is red extremely stony loam that
<br /> from sandstone. The average annual precipitation is extends to 60 inches or more.
<br /> about 18 to 25 inches, the average annual air tempera- Permeability is moderate. The available water capacity
<br /> ture is about 32 to 40 degrees F. and the frost-free is moderate. Surface runoff is medium, and the erosion
<br /> season is about 30 to 50 days. hazard is high.
<br /> Included in mapping are small areas of Uinta sandy Most of the acreage is woodland. Part of it is used for
<br /> loam, Leadville stony loam, and Woodhall loam. Also recreation and wildlife. The cold climate and short grow-
<br /> included are a few small areas of Rock outcrop. ing season limit the production of introduced grasses
<br /> Typically the Lake Creek soil has a duff layer of nee- and of wood crops.
<br /> dies and twigs about 1 inch thick. The subsurface layer The potential native vegetation is dominantly lodge-
<br /> is pink loam about 5 inches thick. The subsoil is reddish pole pine and a sparse understory of grasses, shrubs,
<br /> yellow, very stony sandy day loam about 30 inches and forbs.
<br /> thick. Sandstone is at a depth of about 35 inches. Leadville soils are suited to lodgepole pine. It pro-
<br /> Permeability is moderate. The effective rooting depth duces about 25 to 35 cubic feet of wood per acre per
<br /> is 20 to 40 inches. The available water capacity is low. year. Thinning the stand provides poles for fences, cor-
<br /> Surface runoff is medium,and the erosion hazard is high. rals, and power lines. Care is needed to prevent erosion
<br /> Most of the acreage is woodland. Part of it is used for of skid trails and access roads. The low water holding
<br /> recreation and wildlife. The cold climate and short grow- capacity limits seedling survival.
<br /> ing season Omit the production of introduced grasses This soil provides habitat for woodland wildlife, such
<br /> and of wood crops. as blue grouse, snowshoe hare, and black bear. It also
<br /> The potential native vegetation is dominantly lodge- provides summer range for mule deer and elk. Managing
<br /> pole pine, some quaking aspen, and a sparse understory livestock grazing and timber improves habitat for the big
<br /> of grasses,forbs,and shrubs. game summer range.
<br /> This soil is suited to lodgepole pine. It produces about Large stones and steep slopes are the soil properties
<br /> 20 to 35 cubic feet of wood per acre per year. Thinning most limiting to community development. Road design
<br /> the stand provides poles and firewood. Extreme care is should provide drainage outlets for surface runoff.
<br /> needed to prevent the erosion of skid trails and roads. The capability subclass is Vile.
<br /> Excessive slope limits the types of equipment used in
<br /> harvesting. The low water holding capacity limits seed- 45—Leavitt loam, 0 to 6 percent slopes.This deep,
<br /> ling survival. well drained, nearly level to moderately sloping soil is on
<br /> Wildlife include deer,elk, blue grouse, snowshoe hare, fans at elevations of 7,500 to 8,500 feet. It formed in
<br /> and black bear. Clear cut openings in the limber in- local alluvium from sedimentary rock. The average
<br /> crease the production of shrubs, grasses, and forbs for annual precipitation is about 14 to 18 inches, the aver-
<br /> deer and elk in summer, age annual air temperature is about 37 to 42 degrees F,
<br /> Depth to rock, large stones, and slope are the soil and the frost-free season is about 35 to 75 days.
<br /> properties most limiting to community development Cut Small areas of Narsha loam, Roxal loam, Lymanson
<br /> and fill slopes should be kept to a minimum to avoid loam, and Tine gravelly sandy loam are included in map-
<br /> hillside slippage. Road design should provide drainage ping.
<br /> outlets for surface runoff. Typically the Leavitt soil has a grayish brown loam
<br /> The capability subclass is Vile. surface layer about 6 inches thick. The subsoil is brown
<br /> clay loam about 28 inches thick. The substratum is pale
<br /> 44—Leadville stony loam, 15 to 50 percent slopes. brown clay loam that extends to 60 inches or more.
<br /> This deep,well drained, moderately steep to steep soil is Permeability is moderate. The effective rooting depth
<br /> on mountainsides and ridges at elevations of 8.500 to is 60 inches or more. The available water capacity is
<br /> 9,500 feet. It formed in material weathered from sand- high. Surface runoff is slow, and the erosion hazard is
<br /> stone. The average annual precipitation is about 18 to low.
<br /> 25 inches, the average annual arc temperature is about Most of the acreage is rangeland. Part of it is used for
<br /> 32 to 40 degrees F. and the frost-free season is about recreation and wildlife. A small acreage is irrigated and
<br /> 30 to 50 days. used for hay.The cold climate and short growing season
<br /> Included in mapping are small areas of Lake Creek limit the production of introduced grasses and preclude
<br /> foam. Uinta sandy loam, and Upson stony sandy loam. the use of this soil as cropland.
<br /> Also included are a few small areas of Rock outcrop. Whealgrass, muttongrass, Idaho fescue, and big sage-
<br /> Typically the Leadville soil has a duff layer about 2 brush are dominant in rangeland vegetation.
<br /> Inches thick consisting of needles and twigs.The subsur- Grazing no more than 50 percent of the key species,
<br /> face layer is pink stony loam about 11 inches thick. The by weight of the current season production,will maintain
<br /> upper 8 inches of the subsoil is reddish brown stony the condition of this site. It shrubs have become domi-
<br /> ' I
<br />
|