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 229<br />
Management<br />
For management information about this map unit,<br />
see appropriate sections in Part II <strong>of</strong> this publication.<br />
237B—Thibadeau loam, saline,<br />
0 to 4 percent 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 />
Thibadeau and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Flood plain<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: Moderately well drained<br />
Parent material: Loamy alluvium<br />
Native plant cover type: Rangeland<br />
Flooding: Rare<br />
Water table: Present<br />
Salt affected: Saline within 30 inches<br />
Available water capacity: Mainly 6.5 inches<br />
Additional Components<br />
Absher and similar soils: 5 percent<br />
Lallie and similar soils: 5 percent<br />
Ledger 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 />
238C—Sagedale-Cabba complex,<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 />
Sagedale and similar soils<br />
Composition: 60 percent<br />
Geomorphic description: Plain and swale<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: Clay loam<br />
Drainage class: Well drained<br />
Parent material: Clayey alluvium weathered from<br />
shale and siltstone<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 9.6 inches<br />
Cabba and similar soils<br />
Composition: 30 percent<br />
Geomorphic description: Knoll and plain<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: 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 2.5 inches<br />
Additional Components<br />
Doney and similar soils: 4 percent<br />
Wayden and similar soils: 4 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 />
238F—Sagedale-Cabba complex,<br />
8 to 35 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 />
Sagedale and similar soils<br />
Composition: 60 percent<br />
Geomorphic description: Base slope on escarpment<br />
and fan<br />
Slope: 8 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: Clay loam<br />
Drainage class: Well drained
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