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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002175

.1 Assoclatlons uf the Study ~

The general soIl map (Map 8)

shows tbe soil associations

in Moffat, Routt, and part of Rio Blanco Counties, Colorado. A soil

association is a landscape that has a distinctive proportional pattern

of soils classified by the name of the major soils. The soil associations in

this inventory have been grouped into five kinds of soil orders for broad

interpretive purposes. Each of the broad groups and the soil associations

in each group are described in the following pages and tables.

AU iso Is

Typic Cryoboralfs, skeletal-Rock outcrop Association, Association #1,

(287,784 acres)

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This association cons4sts of sloping to steep soils on mountain

slopes and,

mesas (8-25+ percent slopes), Elevations range from 8,000-11,000
/
average a~n~ precipitation is 24 inches+. The soil moisture

feet, The

regime is ustic; average annual soil temperature is less than 470Fj average

summer soil temperature is more than 590F, (cryic), and the frost-free

season is 30-45 days. I I
_~")Wl'\.,'c.V\. '~

~as.soe';,a'ti:on is about 70 percent Typic Cryoboralfs, skelf\tal,
,-S ")
20 percent rock outcrop, and 10 percent unidentified minor soils, ~~~LterQ~-
I . / - ~
.Jdl P~-->7t'.;-~~ , .
C'~ ~UUl:nerlY ol~; These- soils and d ty!-e are__located in the eastern

- part of the study area with small 'r'~$~e extreme northwestern part.
~ Q :J""'fuf
'~]li:c-c-ryobo-ra-Hs,-skel~e.tal_so.H:s---M-e moderately-deep to deep, well-

drained soils over residuum, formed in residuum and colluvium from shale

and granitic rocks.

Typically they have an accumulation of organic matter, 0 horizon,

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overlying a light-colored, gravelly (more than 15 percent course fragments)

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