WSP06130

• File Number: 8200.760
• Description: Yampa River General
• State: CO
• Basin: Yampa/White
• Water Division: 6
• Date: 2/26/1957
• Author: BOR
• Title: Yampa-White Project - Colorado Utah and Wyoming - Reconnaissance Report - February 1957
• Water Supply Pro - Doc Type: Report/Study

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CllAPl'ER II

Land characteristics
Soils
Texture

Depth to clay, sand,
or gravel.

Depth to shale, raw
soil frCBll shale, or
solid rock.

Depth to penetrable
lime zone.
Alkalinity
Salinity
Topography
Uniform slopes

Undulating slopes,
lllaXimum cubic yards
per acre to smooth.
Size of areas, mini-
DIUIIl length of irri-
gation run.
Drainage
Farm drainage

Class 1 (Arable

Specifications for 1953-55 reconnaissancelaDd classification

Class 3 (Arable)

Medium sandy loam to friable
clay loam.
36" minimum for all textures
except sandy loams which
must have 42" minimUDI depth.

60" minimum of uniform soil,
54" minimum if a 6" layer of
gravel or coarse sand over-
lies the rock.
18" minimum with 60" of
penetrable material.
pH less than 8.8.
Less than 0.2 percent.

Less than 4 percent but
greater than 0.2 percent.
LeSS than 150 cubic yards
per acre.

500'

Farm drainage requirements
within permissible devel-
opment costs.

Total permissible land
development costs,
projected price levels
215 (1910-14 avg.) $35 per acre

Class 2 (Arable)

lDamy fine sand to very
permeable clay.
24" minimum for loams and
heavier, 30" minimUD1
for sandy loams, 36"
m1n-lm1DD. for loamy sa.nds.
48" minimUD1 of uniforlll soil,
42" minimum if a 6" layer
of gravel or coarse sand
overlies the rock.
14" minimum with 48" of
penetrable material.
pH less than 9.0.
Less than 0.5 percent.

Less than 8 percent.

Less than 250 cubic yards
per acre.

300'

Farm dra1:nage requirements
within permissible devel-
opment costs.

$50 per acre

lDamy sand to permeable cla

18" minimum for lo8ms and
heavier, 24" minimum for
sandy lOalllS I 30" minimum
for loamy sands.
42" minimum of uniform soil,
36" min:lJnum if a 6" layer
of gravel or coarse sand
overlies the rock.
10" minimum with 36" of
penetrable material.
pH less than 9.0.
Less than 0.5 percent.

Less than 12 percent.

Less than 400 cubic yards
per acre.

150'

Farm drainage requirements
within permissible devel-
opment costs.

$70 per acre

MSES FOR ANALYSIS

Class 4-Pasture
Limited arable

lDamy sand to slowly permeable
clay.
12" minimum for looms and
heavier, 18" minimum for
sandy loams, 24" minimUIII.
for loamy sands.
24" minimum on slope above 4'1>,
30" minilIlum on slope less
than 4'1>.

6" minimum with 24" of
penetrable material.
pH less than 9.0.
Less than 0.75 percent.

Less than 20 percent.

Less than 150 cubic yards
per acre.

150'

Farm drainage requirements
within permiSSible devel-
opment costs.

$35 per acre

Class 6--(Nonarable)--Includes lands which do not IIleet the minimum requirements of the next higher class mapped in a p icular survey and small areas
of arable lard lying within large bodies of nonarable land.

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