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112 <br />Map Unit Composition <br />Lander and similar soils: 85 percent <br />Minor components: 15 percent <br />Component Descriptions <br />Lander soils <br />Landform: Flood plains <br />Parent material: Alluvium derived from mixed sources <br />Slope: 0 to 3 percent <br />Drainage class: Somewhat poorly drained <br />Slowest permeability. 0.2 to 0.6 in./hr. (moderately <br />slow) <br />Available water capacity. About 8.9 inches (moderate) <br />Shrink-swell potential. About 4.5 percent (moderate) <br />Flooding hazard. Rare <br />Seasonal high water table depth: About 30 to 42 <br />inches <br />Runoff class: Medium <br />Calcium carbonate maximum: About 5 percent <br />Gypsum maximum: None <br />Salinity maximum: About 0 mmhos/cm (nonsaline) <br />Sodium adsorption ratio maximum: About 0 <br />(nonsodic) <br />Ecological site: River Bottom <br />Potential native vegetation: basin wildrye, western <br />wheatgrass, slender wheatgrass, Nebraska <br />sedge <br />Land capability subclass (irrigated): 4c <br />Land capability subclass (nonirrigated): 4c <br />Typical Profile: <br />0 to 10 inches; loam <br />10 to 44 inches; stratified fine sandy loam to clay <br />loam <br />44 to 55 inches; fine sand <br />55 to 60 inches; extremely gravelly sand <br />Minor Components <br />Haplaquolls and similar soils <br />Composition: About 5 percent <br />Landform: Oxbows <br />Apmay and similar soils <br />Composition: About 5 percent <br />Battlement and similar soils <br />Composition: About 5 percent <br />Soil Survev <br />119-Il-angspring sandy loam, 3 to 12 <br />percent slopes <br />Map Unit Setting <br />Major Land Resource Area: 34 <br />Elevation: 6,000 to 7,000 feet (1,829 to 2,134 meters) <br />Mean annual precipitation: 9 to 11 inches (229 to 279 <br />millimeters) <br />Mean annual air temperature: 42 to 45 degrees F. <br />(5.6 to 7.2 degrees C.) <br />Freeze-free period. 75 to 95 days <br />Map Unit Composition <br />Langspring and similar soils: 85 percent <br />Minor components: 15 percent <br />Component Descriptions <br />Langspring soils <br />Landform: Plateaus <br />Parent material. Loess over residuum derived from <br />sandstone <br />Slope: 3 to 12 percent <br />Drainage class: Well drained <br />Slowest permeability. 0.6 to 2.0 in./hr. (moderate) <br />Available water capacity. About 8.8 inches (moderate) <br />Shrink-swell potential: About 1.5 percent (low) <br />Runoff class: Medium <br />Calcium carbonate maximum: About 40 percent <br />Gypsum maximum: About 2 percent <br />Salinity maximum: About 4 mmhos/cm (very slightly <br />saline) <br />Sodium adsorption ratio maximum: About 5 (slightly <br />sodic) <br />Ecological site: Loamy 7-10" PPT <br />Potential native vegetation: Wyoming big sagebrush, <br />streambank wheatgrass, Indian ricegrass, <br />bottlebrush squirreltail, shadscale saltbush, <br />streambank wheatgrass, needleandthread, <br />western wheatgrass <br />Land capability subclass (nonirrigated): 6e <br />Typical Profile: <br />0 to 3 inches; sandy loam <br />3 to 17 inches; sandy clay loam <br />17 to 60 inches; sandy clay loam