2003-08-12_PERMIT FILE - M2003068

• Permit No: M2003068
• IBM Index Class Name: Permit File
• Doc Date: 8/12/2003
• Doc Name: Permit Application
• From: Craig J. Walker Revocable Trust
• To: DMG
• Media Type: D
• Archive: No

i
Huerfano County Area, Colorado
production per acre of timber is 4,400 cubic feet or
15,000 board feet (International rule, one-eighth inch
kert) from an even-aged, fully stocked stand of trees 120
years old.
Conventional methods of harvesting timber are difficult
to use because of slope. Steepness of slope limits
felling, yarding, and road construction. Minimizing the risk
of erosion is essential in harvesting timber. Roads and
landings can be protected from erosion by constructing
water bars and by seeding cuts and fills.
Suitable seeding mixtures for use in reforestation can
include manchar smooth brome, orchardgrass, and
intermediate or pubescent wheatgrass. Seeding late in
fall helps to insure that soil moisture will be adequate for
the establishment of seedlings next spring. To provide
an adequate seedbed, the surtace should be chiseled or
otherwise disturbed. Planting trees on the contour helps
to control erosion. Additional protection can be provided
by interplanting with a cover crop.
This unit is poorly suited to homesite development. It
is limited mainly by steepness of slope.
This map unit is in capability subclass VIIe,
nonirrigated. It is in the Douglas-fir woodland site.
12-Collegiate loam, 1 to 3 percent slopes. This
deep, somewhat poorly drained soil is on flood plains
and low terraces. It formed in alluvium. The native
vegetation is mainly meadow grasses. Elevation is 7,600
to 8,600 feet. The average annual precipitation is 18 to
25 inches, the average annual air temperature is 40 to
45 degrees F, and the average frost-free period is 60 to
90 days.
Typically, the surface layer is dark grayish brown loam
about 31 inches thick. The substratum to a depth of 60
inches or more is gleyed and mottled very gravelly sand.
The soil is neutral throughout.
Included in this unit is about 15 percent Breece sandy
loam in the better drained areas of the unit.
Permeability of this Collegiate soil is moderate.
Available water capacity is low. Effective rooting depth is
limited by the seasonal high water table that is at a
depth of 12 to 36 inches from March to July. The soil is
subject to brief periods of flooding in spring and early in
summer. Runoff is slow, and the hazard of water erosion
is slight.
Most areas of this unit are used for irrigated hay and
pasture. A few areas are used as rangeland.
This unit is better suited to irrigated hay and pasture
than to most other crops. The period of cutting or
grazing increases the risk of winterkill. The choice of
crops is limited to grasses because of wetness and the
relatively short growing season. Irrigation water can be
applied by corrugations and by flooding from contour
ditches. Because the underlying sand and gravel can be
exposed, onsite investigation may be needed before
leveling. Grazing when the soil is wet results in
compaction of the surface layer. Most crops respond to
nitrogen and phosphorus fertilizer. If properly managed,
21
this unit can produce 3.5 tons of irrigated grass hay per
acre.
The potential plant community on this unit is mainly
tufted hairgrass, slender wheatgrass, Nebraska sedge,
and ovalhead sedge. The average annual production of
air-dry vegetation is about 3,000 pounds per acre. If the
condition of the range deteriorates, Baltic rush, iris,
shrubby cinquefoil, and willow increase. Range seeding
is suitable if the range is in poor condition.
This unit is poorly suited to homesite development.
The main limitations are the seasonal high water table
and the hazard of flooding.
This map unit is in capability subclass Vw, irrigated
and nonirrigated. It is in Mountain Meadow range site.
13-Crooked Creek silty clay loam. This deep,
poorly drained soil is on flood plains and terraces. It
formed in clayey alluvium. Slope is 0 to 2 percent. The
native vegetation is mainly grass. Elevation is 6,800 to
7,500 feet. The average annual precipitation is 14 to 16
inches, the average annual air temperature is 42 to 45
degrees F, and the average frost-free period is 80 to 110
days.
Typically, the surface layer is dark gray silty clay loam
about 7 inches thick. The upper part of the substratum is
silty clay about 38 inches thick, and the lower part to a
depth of 60 inches or more is silt loam. The soil is mildly
alkaline to a depth of 19 inches and moderately alkaline
below that depth.
Included in this unit is about 10 percent Glenberg
sandy loam near stream channels. Also included are
small areas of Manzano loam on the upper part of
terraces.
Permeability of this Crooked Creek soil is slow.
Available water capacity is high. Effective rooting depth
is limited by seasonal high water table that is at a depth
of 12 to 30 inches from January to July. Runoff is slow,
and the hazard of water erosion is slight. The soil is
subject to brief periods of flooding in spring and early in
summer.
Most areas of this unit are used for irrigated hay and
pasture. A few areas are used as rangeland.
The choice of crops is limited to grasses because of
the seasonal high water table and the short growing
season. This unit is well suited to irrigated hay and
pasture. Irrigation water can be applied by corrugations
and by flooding from contour ditches. Because of the
slow permeability of soil, the length of runs should be
adjusted to permit adequate infiltration of water.
Proper stocking rates, pasture rotation, and restricted
grazing during wet periods help to keep the pasture in
good condition and to protect the soil from erosion.
Nonleguminous crops respond to nitrogen and
phosphorus, and leguminous crops respond to
phosphorus. If properly managed, this unit can produce
3.5 tons of irrigated grass hay per acre.
The potential plant community On this unit is mainly
tufted hairgrass, slender wheatgrass, sedge, and willow.