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Range Production (Normal Year)— Summary by Map Unit — La Plata County Area, Colorado <br />Map unit symbol <br />Map unit name <br />Rating (pounds per <br />acre per year) <br />Acres in A01 <br />Percent of A01 <br />46 <br />Nordicol very stony sandy loam, 6 to 25 <br />percent slopes <br />208.5 <br />19.8% <br />49 <br />Pastorius cobbly loam <br />1500 <br />41.9 <br />4.0% <br />50 <br />Pescar fine sandy loam <br />2812 <br />8.5 <br />0.8% <br />57 <br />Riverwash <br />11.4 <br />1.1% <br />71 <br />Valto -Rock outcrop complex, 12 to 65 <br />percent slopes <br />92.9 <br />8.8% <br />Subtotals for Soil Survey Area <br />527.6 <br />50.1% <br />Totals for Area of Interest <br />1,052.7 <br />100.0% <br />• <br />• <br />Custom Soil Resource Report <br />Rating Options —Range Production (Normal Year) <br />Units of Measure: pounds per acre per year <br />Aggregation Method: Weighted Average <br />Component Percent Cutoff: None Specified <br />Tie -break Rule: Higher <br />Interpret Nulls as Zero: Yes <br />Water Management <br />Water Management interpretations are tools for evaluating the potential of the soil in <br />the application of various water management practices. Example interpretations <br />include pond reservoir area, embankments, dikes, levees, and excavated ponds. <br />Pond Reservoir Areas <br />Pond reservoir areas hold water behind a dam or embankment. Soils best suited to <br />this use have low seepage potential in the upper 60 inches. The seepage potential is <br />determined by the saturated hydraulic conductivity (Ksat) of the soil and the depth to <br />fractured bedrock or other permeable material. Excessive slope can affect the storage <br />capacity of the reservoir area. <br />The ratings are both verbal and numerical. Rating class terms indicate the extent to <br />which the soils are limited by all of the soil features that affect the specified use. "Not <br />limited" indicates that the soil has features that are very favorable for the specified <br />use. Good performance and very low maintenance can be expected. "Somewhat <br />limited" indicates that the soil has features that are moderately favorable for the <br />specified use. The limitations can be overcome or minimized by special planning, <br />design, or installation. Fair performance and moderate maintenance can be expected. <br />"Very limited" indicates that the soil has one or more features that are unfavorable for <br />the specified use. The limitations generally cannot be overcome without major soil <br />66 <br />