Soil survey area

Red Willow County, Nebraska

Survey Area NE145• Nebraska
The short version

The most common soil here is Holdrege, on about 22% of the land: a silt loam, smooth, like flour. Coly and Keith come next.

About 98% of the land drains well.

USDA rates 37% of the land very limited for a standard septic drain field, and 35% very limited for homes with basements. That means extra cost or special design, not that it can't be done.

Worth knowing: 5% of the land floods occasionally or more.

Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.

The ground underfoot

The soils you're most likely standing on

The biggest named soils in Red Willow County, Nebraska, each drawn five feet deep from its official USDA description, in its recorded colors.

Holdrege
22% of the area
Silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Mollisols
Coly
21% of the area
Silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Entisols
Keith
21% of the area
Silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Mollisols
Uly
10% of the area
Silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Mollisols
Hord
6% of the area
Silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Mollisols
Sulco
5% of the area
Loam topsoil · well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Inceptisols

Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.

The biggest mapped areas

The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Red Willow County, Nebraska. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Coly silt loam, 11 to 30 percent slopes 89K Well drainedBVery limitedVery limited
Holdrege and Keith silt loams, 1 to 3 percent slopes, eroded 83K Well drainedBNot limitedSomewhat limited
Uly silt loam, 6 to 11 percent slopes, eroded 32K Well drainedBNot limitedSomewhat limited
Holdrege and Keith silt loams, 3 to 7 percent slopes, eroded 31K Well drainedBNot limitedSomewhat limited
Hord silt loam, 0 to 1 percent slopes, warm 28K Well drainedBNot limitedSomewhat limited
Holdrege and Keith silt loams, 1 to 3 percent slopes 27K Well drainedBNot limitedSomewhat limited
Keith silt loam, 1 to 3 percent slopes, eroded 23K Well drainedBNot limitedSomewhat limited
Sulco silt loam, 9 to 30 percent slopes 16K Well drainedBVery limitedVery limited
Holdrege silt loam, 1 to 3 percent slopes, eroded 12K Well drainedCNot limitedSomewhat limited
Coly and Uly silt loams, 11 to 30 percent slopes 10K Well drainedBVery limitedVery limited
Coly silt loam, 3 to 11 percent slopes 10K Well drainedBNot limitedSomewhat limited
Coly-Uly-Hobbs silt loams, 3 to 60 percent slopes 8K Well drainedBVery limitedVery limited
Cozad silt loam, 1 to 3 percent slopes 6K Well drainedBNot limitedSomewhat limited
Hobbs-McCook silt loams, occasionally flooded 6K Well drainedBVery limitedVery limited
Holdrege and Keith silt loams, 0 to 1 percent slopes 6K Well drainedBNot limitedSomewhat limited
Keith silt loam, 1 to 3 percent slopes 6K Well drainedCNot limitedSomewhat limited
Holdrege silt loam, 1 to 3 percent slopes, plains and breaks 6K Well drainedCNot limitedVery limited
McCook and Bigbend loams 6K Well drainedBNot limitedSomewhat limited
Sulco-Ulysses silt loams, 9 to 30 percent slopes, eroded 5K Well drainedBVery limitedVery limited
Cozad silt loam, 0 to 1 percent slopes 5K Well drainedBNot limitedSomewhat 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.
Entisols
Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.
Inceptisols
Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

What This Means

Building & Foundations

About 35% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 37% 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.

Look Up a Specific Address

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