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Table III-2-- Dominant characteristics of 5011 mapping units of the San Juan River Basin in Arizona, Colorado. New MeXico, and Utah !/ (continued) , I , 5-40 III (BLUE) "' 18 2.0 6,200-8,000 15-25 46-48 100-150 Pinyon-Juniper. Montane Forest. Mountain Brush, Northern Desert Shrub Moderately deep to shallow Shale and sandstone D0l3g1 Medium to rapid Moderate to high. water Grazing Low Low -' (DARK GREEN) IV 19 2.5 0.5 3.0 1.5 0.5 2.5 3,0 0.5 7,000-9,000 7,000-9,000 ?000-9,OOO 6,500-8,500 7,400-8,200 8.000- n.ooo 7,500-11,000 8,000-11,000 16-25 16-22 15-20 15-25 16-22 20-30 20-30 22-30 38-46 38-46 38-46 43-44 47 25-42 25-42 47 100-125 Montane Forest. Mountain Brush. Pinyon-Juniper 75-100 Montane Forest Mountain. Brush 75-115 Mountain Brush, Montane Forest 75-150 Pinyon-Juniper. Mountain Brush, Montane Fores t 75-125 Usually frost every month Usually frost every month Usually frost every month Northern Desert Shrub, Mountain Brush, Pinyon- Juniper Montane Forest Montane Foreat Montane forest Deep to shallow Shallow Moderatel.y deep. to shallow Deep to shallow Deep Moderate 1y deep to shallow Deep to shallow Deep to shallow Sandstone Sandstone Sha le and sandstone Shale. sandstone. alluvial deposits Gravelly and cobbly outwash Sedimentary and igneous rocks. colluvium and t1l1 Sedimentary and igneous rocks. colluvium and till Sedimentary and igneous rocks, colluvium and t1l1 5-71 5-) I 3-40 I 0-4f 1-1~ , 10-(,0 I I 15-6~ I I 3-65 , Medium Low to moderate. water Timbering. gra~ing recreation Grazing. recreation. lmt. timbering Grazing, recreation, irrigated and dry cropland Grazing, timbering, recreation Grazing, recreation Timbering Bnd gTazing. recreation and water yield Grazing and timbering. recreation and water yield Timbering and grazing recreation and water yield None Low Low Low Low Low None (LIGHT GREEN) 20 21 22 23 24 25 26 V 27 4.0 10,000-13,000 30-50+ 25-42 Usually frost every month Subalpine Forest, Alpine Shallow and moderately deep Sedimentary and igneous rocks) colluvium and till 10-80 Medium to Tapid Low to moderate, water Timbering and grazing, recreation and waeer yield None Low VI (ORANGE) 28 42.0 4,000-7,500 6-16 42-54 100-170 Grass. Pinyon- Juniper. Barren Shallow and rock outcrop Sandstone. shale. and colluvium 0-7r Medium Low to moderate, water Grazing and recreation 1/ These interpretations are intended for general planning. Each mapping unit is an association of different soils maps should be used for I operational i Medium to rapid Hoder8~e to high. water Medium Law to moderate, water M.ed ium Low to moderate., water Medium Low, ....ater Medium to slow Low) water Medium to slo'" Low. ...ater Rapid Moderate to high planning. III-13