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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<strong>Sweet</strong> <strong>Grass</strong> <strong>County</strong> <strong>Area</strong>, <strong>Montana</strong>—Part I 189<br />
Additional Components<br />
Delpoint and similar soils: 2 percent<br />
Reedpoint and similar soils: 2 percent<br />
Rentsac and similar soils: 2 percent<br />
Tanna and similar soils: 2 percent<br />
Yawdim 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 />
142C—Tanna clay loam, 2 to 8 percent<br />
slopes<br />
Setting<br />
Elevation: 3,750 to 5,200 feet<br />
Mean annual precipitation: 10 to 14 inches<br />
Frost-free period: 95 to 125 days<br />
Major Component Description<br />
Tanna and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Plain and swale<br />
Slope: 2 to 8 percent<br />
Elevation: 3,750 to 5,200 feet<br />
Effective annual precipitation: 10 to 14 inches<br />
Frost-free period: 95 to 125 days<br />
Surface layer texture: Clay loam<br />
Depth to bedrock (paralithic): 20 to 40 inches<br />
Drainage class: Well drained<br />
Parent material: Clayey residuum weathered from<br />
sandstone and shale<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 4.2 inches<br />
Additional Components<br />
Ethridge and similar soils: 8 percent<br />
Marmarth and similar soils: 4 percent<br />
Cabbart 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 />
144B—Evanston loam, 0 to 4 percent<br />
slopes<br />
Setting<br />
Elevation: 3,750 to 5,200 feet<br />
Mean annual precipitation: 10 to 14 inches<br />
Frost-free period: 95 to 125 days<br />
Major Component Description<br />
Evanston and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Tread on terrace<br />
Slope: 0 to 4 percent<br />
Elevation: 3,750 to 5,200 feet<br />
Effective annual precipitation: 10 to 14 inches<br />
Frost-free period: 95 to 125 days<br />
Surface layer texture: Loam<br />
Drainage class: Well drained<br />
Parent material: Loamy alluvium<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 9.9 inches<br />
Additional Components<br />
Ethridge and similar soils: 5 percent<br />
Kremlin and similar soils: 5 percent<br />
Marmarth and similar soils: 3 percent<br />
Tanna 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 />
144C—Evanston loam, 4 to 8 percent<br />
slopes<br />
Setting<br />
Elevation: 3,750 to 5,200 feet<br />
Mean annual precipitation: 10 to 14 inches<br />
Frost-free period: 95 to 125 days<br />
Major Component Description<br />
Evanston and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Microlow on fan<br />
Slope: 4 to 8 percent<br />
Elevation: 3,750 to 5,200 feet<br />
Effective annual precipitation: 10 to 14 inches<br />
Frost-free period: 95 to 125 days<br />
Surface layer texture: Loam<br />
Drainage class: Well drained<br />
Parent material: Loamy alluvium<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 9.9 inches<br />
Additional Components<br />
Ethridge and similar soils: 8 percent<br />
Kremlin and similar soils: 7 percent
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