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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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284 <strong>Soil</strong> <strong>Survey</strong><br />

Mean annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Major Component Description<br />

Fifer and similar soils<br />

Composition: 45 percent<br />

Geomorphic description:<br />

• Mountaintop summit on mountain<br />

• Mountaintop shoulder on mountain<br />

Slope: 4 to 15 percent<br />

Elevation: 6,000 to 7,500 feet<br />

Effective annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Surface layer texture: Loam<br />

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

Drainage class: Well drained<br />

Parent material: Loamy residuum weathered from<br />

sandstone and siltstone<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 2.7 inches<br />

Rock outcrop<br />

Composition: 40 percent<br />

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

exposed hard bedrock.<br />

Geomorphic description: Mountain<br />

Additional Components<br />

Cheadle and similar soils: 5 percent<br />

Knep and similar soils: 5 percent<br />

Tongue River and similar soils: 5 percent<br />

Management<br />

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

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

384E—Fifer-Cheadle complex,<br />

15 to 45 percent slopes<br />

Setting<br />

Elevation: 6,000 to 7,500 feet<br />

Mean annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Major Component Description<br />

Fifer and similar soils<br />

Composition: 45 percent<br />

Geomorphic description:<br />

• Mountaintop summit on mountain<br />

• Mountaintop shoulder on mountain<br />

• Mountainflank shoulder on mountain<br />

Slope: 15 to 45 percent<br />

Elevation: 6,000 to 7,500 feet<br />

Effective annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Surface layer texture: Loam<br />

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

Drainage class: Well drained<br />

Parent material: Loamy residuum weathered from<br />

sandstone and shale<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 2.7 inches<br />

Cheadle and similar soils<br />

Composition: 40 percent<br />

Geomorphic description:<br />

• Mountaintop summit on mountain<br />

• Mountaintop shoulder on mountain<br />

Slope: 15 to 45 percent<br />

Elevation: 6,000 to 7,500 feet<br />

Effective annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Surface layer texture: Channery 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 1.1 inches<br />

Additional Components<br />

Fifer and similar soils: 4 percent<br />

Knep and similar soils: 4 percent<br />

Tongue River and similar soils: 4 percent<br />

Rock outcrop: 3 percent<br />

Management<br />

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

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

385E—Millerlake-Arrowpeak-Adel<br />

complex, 8 to 35 percent slopes<br />

Setting<br />

Field investigation intensity: Order 2<br />

Elevation: 6,000 to 7,500 feet<br />

Mean annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Major Component Description<br />

Millerlake and similar soils<br />

Composition: 40 percent<br />

Geomorphic description: Mountainbase toeslope on<br />

mountain

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