Lake County, Oregon, Northern Part, Parts of Lake and Klamath Counties

Survey Area OR635• Oregon

The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Mollisols — grassland soils with a thick, dark, fertile topsoil rich in organic matter. 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 Lake County, Oregon, Northern Part, Parts of Lake and Klamath Counties. 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
Raz-Brace complex, high precipitation, 2 to 20 percent slopes	188K	Well drained	D	Very limited	Very limited
Raz-Brace complex, low precipitation, 2 to 20 percent slopes	131K	Well drained	D	Very limited	Very limited
Goodtack ashy very fine sandy loam, 2 to 10 percent slopes	52K	Well drained	D	Very limited	Very limited
Abert ashy loamy sand, 0 to 2 percent slopes	45K	Well drained	B	Not limited	Somewhat limited
Thornlake complex, 0 to 2 percent slopes	43K	Well drained	B	Not limited	Somewhat limited
Morehouse ashy loamy fine sand, 0 to 2 percent slopes	43K	Somewhat excessively drained	A	Not limited	Somewhat limited
Water	42K		D	Not rated	Not rated
Yankeewell very cobbly sandy loam, 2 to 15 percent slopes	42K	Well drained	D	Very limited	Very limited
Enko loamy sand, 2 to 8 percent slopes	37K	Well drained	C	Not limited	Very limited
Ninemile very cobbly loam, low precipitation, 2 to 15 percent slopes	37K	Well drained	D	Very limited	Very limited
Wanoga-Henkle complex, 0 to 15 percent slopes	32K	Well drained	A	Very limited	Very limited
Moonbeam-Goodtack complex, 1 to 10 percent slopes	32K	Well drained	D	Very limited	Very limited
Moonbeam very gravelly ashy loam, 1 to 12 percent slopes	32K	Well drained	D	Very limited	Very limited
Lonegrave-Fitzwater-Rock outcrop complex, 20 to 60 percent slopes	31K	Well drained	C	Very limited	Very limited
Anawalt-Freznik complex, 1 to 5 percent slopes	30K	Well drained	D	Very limited	Very limited
Rabbithills gravelly loamy sand, 0 to 5 percent slopes	29K	Well drained	D	Very limited	Very limited
Lithic Haploxerolls-Lava flows complex, 2 to 15 percent slopes	28K	Well drained	D	Very limited	Very limited
Wanoga-Henkle complex, dry, 0 to 15 percent slopes	27K	Well drained	A	Very limited	Very limited
Wegert-Kunceider complex, cool, 0 to 15 percent slopes	25K	Somewhat excessively drained	A	Very limited	Very limited
Weglike-Suckerflat complex, 0 to 3 percent slopes	25K	Well 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.

Mollisols

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

Aridisols

Dry-climate soils with low organic matter. Often have caliche layers that make excavation difficult. Low shrink-swell is good for foundations.

Andisols

Volcanic ash soils — light, porous, and fertile. Excellent drainage, but low density can complicate foundations.

Entisols

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

What This Means

Building & Foundations

About 77% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes. A geotechnical assessment is recommended before building.

Septic Systems

About 81% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.

Gardening & Agriculture

Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.