Logan County, Colorado
The most common soil here is Valent, on about 9% of the land: a sand, loose sand that holds almost no water. Platner and Rago come next.
About 91% of the land drains well, and 6% stays wet for long stretches; groundwater comes within two feet of the surface under 2% of it.
USDA rates 56% of the land very limited for a standard septic drain field, and 19% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 6% of the land floods occasionally or more, and bedrock lies within 40 inches under 15% of it.
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 soils you're most likely standing on
The biggest named soils in Logan County, Colorado, each drawn five feet deep from its official USDA description, in its recorded colors.
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 C (slow infiltration, moderate 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 Logan County, Colorado. 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 |
|---|---|---|---|---|---|
| Valent loamy sand, 3 to 9 percent slopes | 108K | Excessively drained | A | Not limited | Very limited |
| Rago loam, 0 to 3 percent slopes | 76K | Well drained | C | Somewhat limited | Very limited |
| Platner loam, 0 to 3 percent slopes | 55K | Well drained | C | Not limited | Somewhat limited |
| Dailey loamy sand, 3 to 9 percent slopes | 37K | Somewhat excessively drained | A | Not limited | Very limited |
| Weld loam, 1 to 3 percent slopes | 33K | Well drained | C | Not limited | Somewhat limited |
| Satanta loam, 1 to 3 percent slopes | 27K | Well drained | C | Not limited | Somewhat limited |
| Platner-Rago-Dacono loams | 26K | Well drained | C | Not limited | Somewhat limited |
| Haxtun loamy sand, 0 to 3 percent slopes | 25K | Well drained | C | Not limited | Very limited |
| Platner loam, 3 to 5 percent slopes | 24K | Well drained | C | Not limited | Very limited |
| Nunn loam, 1 to 3 percent slopes | 22K | Well drained | C | Somewhat limited | Very limited |
| Mitchell loam, 0 to 3 percent slopes | 22K | Well drained | A | Not limited | Not limited |
| Rosebud-Escabosa loams, 3 to 5 percent slopes | 21K | Well drained | C | Somewhat limited | Very limited |
| Stoneham-Cushman complex, 3 to 9 percent slopes | 21K | Well drained | C | Not limited | Somewhat limited |
| Wages loam, 3 to 5 percent slopes | 20K | Well drained | B | Not limited | Somewhat limited |
| Valent sand, hilly | 19K | Excessively drained | A | Very limited | Very limited |
| Mitchell-Keota loams, 3 to 9 percent slopes | 19K | Well drained | A | Not limited | Not limited |
| Dix-Eckley complex, 5 to 25 percent slopes | 19K | Somewhat excessively drained | A | Very limited | Very limited |
| Wages loam, 0 to 3 percent slopes | 18K | Well drained | C | Not limited | Not limited |
| Dix-Altvan complex, 10 to 30 percent slopes | 17K | Excessively drained | A | Very limited | Very limited |
| Ascalon sandy loam, sandy substratum, 3 to 5 percent slopes | 15K | Well drained | B | Not limited | Not 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.
What This Means
Building & Foundations
Most soils are generally favorable for residential construction. Standard foundations are usually viable, though site-specific evaluation is always recommended.
Septic Systems
About 56% 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
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.