Weld County, Colorado, Northern Part
The most common soil here is Ascalon, on about 17% of the land: a fine sandy loam, gritty and crumbly. Olney and Platner come next.
About 98% of the land drains well.
USDA rates 35% of the land very limited for a standard septic drain field, and 8% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: bedrock lies within 40 inches under 20% 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 Weld County, Colorado, Northern Part, 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 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 Weld County, Colorado, Northern Part. 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 |
|---|---|---|---|---|---|
| Ascalon fine sandy loam, 0 to 6 percent slopes | 198K | Well drained | B | Not limited | Not limited |
| Olney fine sandy loam, 0 to 6 percent slopes | 139K | Well drained | B | Not limited | Somewhat limited |
| Platner loam, 0 to 3 percent slopes | 105K | Well drained | C | Not limited | Somewhat limited |
| Ascalon sandy loam, 5 to 9 percent slopes | 66K | Well drained | B | Not limited | Somewhat limited |
| Kim-Mitchell complex, 0 to 6 percent slopes | 64K | Well drained | C | Not limited | Not limited |
| Nunn loam, 0 to 6 percent slopes | 49K | Well drained | C | Somewhat limited | Very limited |
| Olney fine sandy loam, 6 to 9 percent slopes | 48K | Well drained | B | Not limited | Somewhat limited |
| Renohill-Shingle complex, 3 to 9 percent slopes | 46K | Well drained | D | Somewhat limited | Very limited |
| Altvan fine sandy loam, 0 to 6 percent slopes | 42K | Well drained | B | Not limited | Somewhat limited |
| Renohill fine sandy loam, 0 to 6 percent slopes | 39K | Well drained | D | Somewhat limited | Very limited |
| Epping silt loam, 0 to 9 percent slopes | 37K | Well drained | D | Very limited | Very limited |
| Haverson loam, 0 to 3 percent slopes | 35K | Well drained | B | Not limited | Somewhat limited |
| Renohill fine sandy loam, 6 to 9 percent slopes | 29K | Well drained | D | Somewhat limited | Very limited |
| Peetz gravelly sandy loam, 5 to 20 percent slopes | 25K | Somewhat excessively drained | A | Somewhat limited | Very limited |
| Terry sandy loam, 3 to 9 percent slopes | 24K | Well drained | B | Somewhat limited | Very limited |
| Avar fine sandy loam | 23K | Well drained | C | Not limited | Somewhat limited |
| Nunn clay loam, 0 to 6 percent slopes | 23K | Well drained | C | Somewhat limited | Very limited |
| Kim-Mitchell complex, 6 to 9 percent slopes | 22K | Well drained | C | Not limited | Not limited |
| Stoneham fine sandy loam, 0 to 6 percent slopes | 21K | Well drained | B | Not limited | Not limited |
| Cascajo gravelly sandy loam, 5 to 20 percent slopes | 20K | Excessively drained | A | Somewhat 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.
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 35% 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.