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Map Unit Description: Seitz -Winz association, 8 to 60 percent slopes -Rio <br />Grande NF Area, Colorado, West Part, Parts of Archuleta, Conejos, Hinsdale, <br />Mineral, Rio Grande, Saguache, and San Juan Counties <br />Rio Grande NF Area, Colorado, West Part, Parts of <br />Archuleta, Conejos, Hinsdale, Mineral, Rio Grande, <br />Saguache, and San Juan Counties <br />168 - Seitz -Winz association, 8 to 60 percent slopes <br />Map Unit Setting <br />Elevation: 9,500 to 11,600 feet <br />Mean annual precipitation: 18 to 30 inches <br />Mean annual air temperature: 36 to 38 degrees F <br />Frost -free period: 30 to 60 days <br />Map Unit Composition <br />Seitz and similar soils: 45 percent <br />Winz and similar soils: 40 percent <br />Minor components: 15 percent <br />Description of Seitz <br />Setting <br />Landform: Mountains <br />Landform position (three - dimensional). Mountainflank <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Residuum weathered <br />from mixed and /or <br />coiluvium <br />derived from mixed <br />Properties and qualities <br />Slope: 15 to 60 <br />percent <br />Surface area covered with cobbles, stones or boulders: 0.1 percent <br />Depth to restrictive feature: More than 80 inches <br />Drainage class: Well drained <br />Capacity of the most limiting layer to transmit water <br />(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) <br />Depth to water table. More than 80 inches <br />Frequency of flooding: None <br />Frequency of ponding: None <br />Maximum salinity: Nonsaline (0.0 to 1.0 mmhos/cm) <br />Available water capacity: Moderate (about 7.3 inches) <br />Interpretive groups <br />Land capability (nonirTigated): 7e <br />Other vegetative classification: Subaipine fir - Engelmann spruce/ <br />common juniper (ABLA- PiEN /JUC06) (CO309 <br />