PERMFILE117166

• Permit No: M1997026
• IBM Index Class Name: Permit File
• Doc Name: NOTES
• Media Type: D
• Archive: No

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89-Mussel loam, 1 l0 6 percent slopes. Thrs deep.
well drained soil ~s on terraces and toot slopes. It
formed in alluvium. Elevation ~s 6.500 to 7,500 teat. The
average annual precipitation is t3 to t4 inches. the
average annual air temperature is 42 10 44 degrees F,
and the average frost-free period is 75 to 90 days.
Typically, the surface layer is light gray loam about B
inches thick. The upper 34 inches of the substratum ~s
sandy clay loam. The lower part to a depth of 60 inches
is gravelly sandy clay loam.
Included in this unit are small areas of Yamo sods.
Included areas make up about 10 percent of the Total
acreage.
Permeability is moderate in the Mussel soil. Available
water capacity ~s high. The effective rooting depth ~s 60
inches or more. Runoff is Slow, and the hazard of water
erosion iS slight.
This unit is used as hayland or for homesile
development. It it is used as hayland, the main
limitation is low fertility. Grasses and legumes grow well
•it adequate fertilizer is used. If properly managed, the
unit can produce 4 tons of irrigated grass hay per acre
annually.
The suitability of this unit for range seeding is goad
The potential plan) community is mainly western
wheatgrass, needleandthread, Nevada bluegrass,
Sandberg bluegrass, and big sagebrush. The average
annual production of air-dry vegetation is about 800
pounds per acre.
This unit is well suited to homesile development.
This map unit is in capability subclass IVe, irrigated
and nonirrigated. It is in the Rolling Loam range site.
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26-Dahlquist-Southace complex, 25 to 50 percent
slopes. This map unit is on alluvial fans, terraces, and
terrace side slopes. Elevation is 6.200 to 7.400 feet
The average annual precipitation is t2 to t6 inches. the
average annual air temperature is 42 to a6 degrees F,
and the average frost-tree period is 705 to t t5 days.
This unit is about 40 percent Dahlqurst soil and 35
percent Southace soil.
Included in this unit are small areas of Yamo soils
and Gypsiorthids Also included are small areas of
sandstone Rock outcrop. Included areas make up about
26 percent of the total acreage.
The Dahlquist soil is deep and well drained. It formed
in alluvium derived from material 01 mixed mineralogy.
Typically, the surface layer rs brown cobbly sandy loam
about 6 inches thick. The upper 7 inches of fhe subsoil
i5 very cobbly Sandy Clay loam. The lower 70 inCheS ~s
very cobbly sandy loam. The substratum to a depth of
60 inches Is calcareous extremely cobbly Sandy loam.
The soil is noncalcareous to a depth of 24 inches and
calcareous below that depth.
Permeability is moderate in the Dahlquist soil.
Available water capacity is low. The effective rooting
depth is 60 inches or more. Runoff is rapid. and the
hazard of water erosion is moderate.
The Southace soil is deep and well drained. It formed
in alluvium. Typically, the surface layer is brown very
stony sandy loam about 3 inches thick. The upper 7
inches of the substratum ~s very stony sandy loam. The
next 12 inches is extremely stony sandy loam. The
lower part to a depth of 60 inches is extremely stony
loamy coarse sand. The soil is calcareous throughout.
Permeability ~s moderately rapid in the Southace soil.
Available water capacity is low. The effective rooting
depth is 60 inches or more. Runoff is rapid. and the
hazard of water erosion is moderate or severe on the
steeper slopes.
This unit is used mainly as rangeland. It also is used
as wildlife habitat. Both of the major soils are local
sources of gravel and crushed rock and are utilized as
such in quarry operations.
The potential plant community on the Dahlquist sail ~s
mainly western wheatgrass, bluebunch wheatgrass.
prairie lnegrass, true mountainmahogany, and big
sagebrush. Other plants that characterize this site are
antelope bitterbrush, Utah serviceberry, Indian
ricegrass, and Douglas rabbitbrush. The average
annual production of air-dry vegetation is about 900
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