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Custom Soil Resource Report <br />167—Grangeville clay loam, partially drained, 0 to 2 percent slopes <br />Map Unit Setting <br />National map unit symbol. hht4 <br />Elevation: 10 to 50 feet <br />Mean annual precipitation: 14 inches <br />Mean annual air temperature: 61 degrees F <br />Frost -free period. 270 days <br />Farmland classification: Prime farmland if irrigated <br />Map Unit Composition <br />Grangeville and similar soils: 85 percent <br />Minor components: 15 percent <br />Estimates are based on observations, descriptions, and transects of the mapunit. <br />Description of Grangeville <br />Setting <br />Landform: Flood plains <br />Landform position (two-dimensional): Toeslope <br />Landform position (three-dimensional): Tread <br />Down-slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Alluvium derived from granitic rock sources <br />Typical profile <br />A - 0 to 16 inches: clay loam <br />C - 16 to 32 inches: fine sandy loam <br />C - 32 to 60 inches: stratified loamy sand to silt loam <br />Properties and qualities <br />Slope: 0 to 2 percent <br />Depth to restrictive feature: More than 80 inches <br />Drainage class: Somewhat poorly drained <br />Runoff class: Medium <br />Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 <br />to 0.57 in/hr) <br />Depth to water table: About 48 to 72 inches <br />Frequency of flooding: Rare <br />Frequency of ponding: None <br />Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) <br />Available water supply, 0 to 60 inches: Moderate (about 7.6 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 2w <br />Land capability classification (nonirrigated): 4w <br />Hydrologic Soil Group: C <br />Hydric soil rating: No <br />21 <br />