PERMFILE133166 - Laserfiche WebLink

Home Browse Search

'flds soils infurmaiion is nOt site ~ ~ specific. Onsite investigation, leafing and analysts by eompeterrt personnel is needed before constnic- tion or other engineering use of soils. 4 / 39 ~ 19--Cathedral-Rock Outcrop complex, 45 to 80 percent siooes. •h~s map unit is on mountainsides. The native vegetation is mainly shrubs and grasses with scattered pinyon and juniper, Elevation is 6,800 to 7,700 feet. The average annual precipitation is 14 to 16 inches, the average annual air temperature is 43 to 46 degrees F, and the average frost-free period is 95 to 115 days. This unit is about 75 percent Cathedral soil and 15 percent Rock outcrop. Tha Cathedral soil and Rock outcrop are on side slopes and ridges. The components of this unit era so intricately intermingled that it was not Dractieal to map .them separately at the scale used. Included in this unit is about 5 percent moderately deep soil otherwise similar to the Cathedral soil. Also included is about 5 percent Taeolots vary gravelly sandy loam on foot slopes and in drainagaways. Small areas of talus are often present below Rock outcrop. The Cathedral soil is shallow and well drained. It formed in colluvium and residuum derived dominantly from gneiss. Slope is 45 to 65 percent. Typically, the surface layer is grayish brown very gravelly coarse sandy loam about 6 inches thick. Below this is a layer of dark grayish brown extremely gravelly sandy loam about 9 inches thick. The substratum is extremely gravelly sandy loam about 4 inches thick over gneiss at a depth of 19 inches. The soil is neutral to a depth of 15 inches and slightly acid below that depth. The texture of the surface layer in soma areas is very cobbly sandy loam or vary stony sandy loam. Permeability of the Cathedral soil is rapid. Available water capacity is vary low. Effective rooting daptn is 10 to 20 incne5. Runoff is very rapid, and the hazard of water erosion is very h~gn. i, ~~