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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258 <strong>Soil</strong> <strong>Survey</strong><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: Clay<br />
Depth to bedrock (paralithic): 10 to 20 inches<br />
Drainage class: Well drained<br />
Parent material: Clayey residuum weathered from<br />
shale and siltstone<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 2.7 inches<br />
Additional Components<br />
Absarokee and similar soils: 3 percent<br />
Castner and similar soils: 3 percent<br />
Amherst 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 />
337C—Work gravelly clay loam,<br />
2 to 8 percent 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 />
Work and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Fan<br />
Slope: 2 to 8 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: Gravelly clay loam<br />
Drainage class: Well drained<br />
Parent material: Clayey alluvium<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 8.4 inches<br />
Additional Components<br />
Shawmut and similar soils: 5 percent<br />
Danvers and similar soils: 4 percent<br />
Roy and similar soils: 3 percent<br />
Tamaneen and similar soils: 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 />
337D—Work gravelly clay loam,<br />
8 to 15 percent 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 />
Work and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Fan<br />
Slope: 8 to 15 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: Gravelly clay loam<br />
Drainage class: Well drained<br />
Parent material: Clayey alluvium<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 8.4 inches<br />
Additional Components<br />
Shawmut and similar soils: 5 percent<br />
Danvers and similar soils: 4 percent<br />
Roy and similar soils: 3 percent<br />
Tamaneen and similar soils: 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 />
342E—Ashbon-Winkler-Weedzunit<br />
complex, 15 to 35 percent slopes<br />
Setting<br />
Elevation: 3,900 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 />
Ashbon and similar soils<br />
Composition: 40 percent<br />
Geomorphic description:<br />
• Nose slope summit on hill<br />
• Nose slope shoulder on hill<br />
Slope: 15 to 25 percent<br />
Elevation: 3,900 to 6,000 feet<br />
Effective annual precipitation: 15 to 19 inches
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