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Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart

Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart

Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart

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256 <strong>Soil</strong> <strong>Survey</strong><br />

Frost-free period: 85 to 115 days<br />

Surface layer texture: Loam<br />

Depth to bedrock (lithic): 10 to 20 inches<br />

Drainage class: Well drained<br />

Parent material: Residuum weathered from<br />

calcareous sandstone<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 2.9 inches<br />

Additional Components<br />

Cabba and similar soils: 3 percent<br />

Castner and similar soils: 3 percent<br />

Work and similar soils: 3 percent<br />

Amor and similar soils: 2 percent<br />

Reedwest and similar soils: 2 percent<br />

Rock outcrop: 2 percent<br />

Management<br />

For management information about this map unit,<br />

see appropriate sections in Part II <strong>of</strong> this publication.<br />

332E—Ticell loam, 15 to 35 percent<br />

slopes<br />

Setting<br />

Elevation: 4,200 to 6,000 feet<br />

Mean annual precipitation: 15 to 19 inches<br />

Frost-free period: 85 to 115 days<br />

Major Component Description<br />

Ticell and similar soils<br />

Composition: 85 percent<br />

Geomorphic description:<br />

• Nose slope summit on hill<br />

• Nose slope shoulder on hill<br />

Slope: 15 to 35 percent<br />

Elevation: 4,200 to 6,000 feet<br />

Effective annual precipitation: 15 to 19 inches<br />

Frost-free period: 85 to 115 days<br />

Surface layer texture: Loam<br />

Depth to bedrock (lithic): 10 to 20 inches<br />

Drainage class: Well drained<br />

Parent material: Residuum weathered from<br />

calcareous sandstone<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 2.9 inches<br />

Additional Components<br />

Cabba and similar soils: 4 percent<br />

Amor and similar soils: 3 percent<br />

Doney and similar soils: 3 percent<br />

Vershal and similar soils: 3 percent<br />

Castner and similar soils: 2 percent<br />

Management<br />

For management information about this map unit,<br />

see appropriate sections in Part II <strong>of</strong> this publication.<br />

333F—Shawmut-Castner-Rock outcrop<br />

complex, 15 to 60 percent slopes<br />

Setting<br />

Elevation: 5,300 to 6,200 feet<br />

Mean annual precipitation: 17 to 20 inches<br />

Frost-free period: 70 to 90 days<br />

Major Component Description<br />

Shawmut and similar soils<br />

Composition: 40 percent<br />

Geomorphic description: Base slope backslope on<br />

escarpment<br />

Slope: 15 to 60 percent<br />

Elevation: 5,300 to 6,200 feet<br />

Effective annual precipitation: 17 to 20 inches<br />

Frost-free period: 70 to 90 days<br />

Surface layer texture: Gravelly loam<br />

Drainage class: Well drained<br />

Parent material: Gravelly alluvium<br />

Native plant cover type: Forestland<br />

Available water capacity: Mainly 4.3 inches<br />

Castner and similar soils<br />

Composition: 33 percent<br />

Geomorphic description:<br />

• Nose slope summit on escarpment<br />

• Nose slope shoulder on escarpment<br />

Slope: 15 to 60 percent<br />

Elevation: 5,300 to 6,200 feet<br />

Effective annual precipitation: 17 to 20 inches<br />

Frost-free period: 70 to 90 days<br />

Surface layer texture: Stony loam<br />

Depth to bedrock (lithic): 10 to 20 inches<br />

Drainage class: Well drained<br />

Parent material: Residuum weathered from<br />

sandstone<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 1.6 inches<br />

Rock outcrop<br />

Composition: 20 percent<br />

Definition: Rock outcrop consists mainly <strong>of</strong> areas <strong>of</strong><br />

exposed hard bedrock.<br />

Geomorphic description: Escarpment

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