Dillon Area - Part of Beaverhead County, Montana

Survey Area MT604• Montana

The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). The most common soil order is Inceptisols — young soils with minimal horizon development but more than Entisols. This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Dillon Area - Part of Beaverhead County, Montana. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map Unit	Acres	Drainage	Hydro Group	Dwellings	Septic
Amesha loam, 0 to 4 percent slopes	21K	Well drained	B	Not limited	Somewhat limited
Bronec-Kalsted gravelly sandy loams, 2 to 8 percent slopes	15K	Well drained	B	Not limited	Somewhat limited
Amesha-Kalsted complex, 2 to 8 percent slopes	11K	Well drained	B	Not limited	Somewhat limited
Area not surveyed, access denied	11K			Not rated	Not rated
Kalsted sandy loam, 0 to 4 percent slopes	9K	Well drained	A	Not limited	Not limited
Philipsburg gravelly loam, 2 to 15 percent slopes	8K	Well drained	C	Somewhat limited	Very limited
Thess loam, 0 to 4 percent slopes	7K	Well drained	B	Not limited	Somewhat limited
Thessvo-Scravo complex, 0 to 4 percent slopes	7K	Well drained	B	Not limited	Very limited
Kalsted-Scravo, stony-Cabbart complex, 15 to 45 percent slopes	7K	Well drained	A	Very limited	Very limited
Kalsted-Sappington complex, 2 to 8 percent slopes	7K	Well drained	A	Not limited	Not limited
Libeg, stony-Poin, very stony-Rock outcrop complex, 25 to 60 percent slopes	7K	Well drained	B	Very limited	Very limited
Geohrock-Bronec-Geohrock, stony complex, 8 to 45 percent slopes	6K	Well drained	B	Very limited	Very limited
Blackleaf, stony-Twinadams-Rock outcrop complex, 8 to 35 percent slopes	6K	Well drained	D	Very limited	Very limited
Bronec-Kalsted complex, 4 to 15 percent slopes	6K	Well drained	B	Somewhat limited	Somewhat limited
Beavwan-Sieberell complex, 1 to 4 percent slopes	5K	Well drained	B	Not limited	Very limited
Beavrock, occasionally flooded-Threeriv, frequently flooded complex, 0 to 4 percent slopes	5K	Poorly drained	B/D	Very limited	Very limited
Amesha-Bronec-Sappington complex, 4 to 15 percent slopes	5K	Well drained	B	Somewhat limited	Somewhat limited
Dillon-Ashbough-Beavrock silt loams, 0 to 4 percent slopes, rarely flooded	5K	Somewhat poorly drained	C	Very limited	Very limited
Barbarela-Nieman-Oro Fino complex, 2 to 15 percent slopes	5K	Well drained	C	Somewhat limited	Very limited
Beavrock-Dillon silt loams, 0 to 4 percent slopes, rarely flooded	5K	Poorly drained	C	Very limited	Very limited

Soil Orders in This Area

The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.

Inceptisols

Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

Mollisols

Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.

Alfisols

Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.

Entisols

Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.

What This Means

Building & Foundations

About 25% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 41% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.

Gardening & Agriculture

Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.