WSPC01774

• File Number: 7630.650
• Description: Wild and Scenic - Yampa River
• State: CO
• Basin: Statewide
• Date: 1/1/3000
• Author: Unknown
• Title: Soil Associations of the Study Region - Moffat-Routt-and Part of Rio Blanco Counties - Colorado
• Water Supply Pro - Doc Type: Report/Study

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Argic Cryoborolls,

loamy-Cryic

I'aleoborolls, "my

association, Association

1159, (496,834 acres)

This association consists of sloping to steep soils on mountain

slopes (9 to 25+ percent slopes). Elevation ranges from 7,000-8,000 feet.

Average annual precipitation is 15-20 inches; moisture regime is ustic.

Average annual soil temperature is more than 320F but less than 470F,

cryic; frost free season is less than 90 days,

The association has about 55 percent Argic Cryoborolls, 40 percent

Cryic Paleoborolls, and 5 percent of unidentified minor soils located in

the eastern and northwestern part of the study area.

Argic Cryoborolls are shallow, well--drained soils on loamy sedimentary

rocks. Typically they have a dark-colored, loamy surface layer, Al horizon,

7-20 inches thick. The subsoil, 10-20 inch layer, B2 horizons, is light-

colored in the lower part and has thin clay films on ped surfaces; substra-

turn is fractured bedrock. Permeability is slow; effective rooting depth

is less than 20 inches. Available water capacity is low-moderate; surface

runoff is slow and erosion hazard slight.

eryic paleoborolls are deep, well-drained soils on basaltic and sedimen-

tary rocks, Typically they have a dark-colored, loamy surface layer,

10-20, inches thick, The subsoil, 10-40 inch layer, B2 horizon, has a clay

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accumulation in the 24-40 inch layer, B 2t horizon; substratum is loamy

soil material above the bedrock. Permeability is moderate; effective

rooting depth is 60 inches+. Available water capacity is high; surface

runoff is slow and erosion hazard slight.

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