Adams County Area, Parts of Adams and Denver Counties, Colorado
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). 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 Adams County Area, Parts of Adams and Denver Counties, Colorado.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Weld loam, 1 to 3 percent slopes | 108K | Well drained | C | Not limited | Somewhat limited |
| Adena-Colby association, gently sloping | 65K | Well drained | C | Not limited | Somewhat limited |
| Ascalon sandy loam, 0 to 3 percent slopes | 43K | Well drained | B | Not limited | Somewhat limited |
| Platner loam, 0 to 3 percent slopes | 39K | Well drained | C | Not limited | Somewhat limited |
| Adena-Colby association, moderately sloping | 35K | Well drained | C | Not limited | Somewhat limited |
| Loamy alluvial land | 34K | Well drained | B | Very limited | Very limited |
| Wiley-Adena-Renohill complex, 3 to 20 percent slopes | 33K | Well drained | C | Very limited | Very limited |
| Ascalon-Vona sandy loams, 1 to 5 percent slopes | 33K | Well drained | B | Not limited | Not limited |
| Arvada loam, 0 to 3 percent slopes | 20K | Well drained | C | Somewhat limited | Very limited |
| Terry-Tassel-Ulm complex, 3 to 20 percent slopes | 20K | Well drained | B | Somewhat limited | Very limited |
| Weld-Deertrail complex, 0 to 3 percent slopes | 20K | Well drained | C | Not limited | Not limited |
| Platner loam, 3 to 5 percent slopes | 18K | Well drained | C | Not limited | Very limited |
| Ascalon sandy loam, 3 to 5 percent slopes | 18K | Well drained | B | Not limited | Somewhat limited |
| Adena loam, 0 to 3 percent slopes | 17K | Well drained | C | Not limited | Somewhat limited |
| Truckton loamy sand, 0 to 3 percent slopes | 16K | Well drained | A | Not limited | Very limited |
| Ellicott-Glenberg complex, 0 to 3 percent slopes, occasionally flooded | 16K | Somewhat excessively drained | A | Very limited | Very limited |
| Colby loam, 6 to 15 percent slopes | 15K | Well drained | B | Somewhat limited | Somewhat limited |
| Vona loamy sand, 3 to 9 percent slopes | 15K | Well drained | A | Not limited | Not limited |
| Nunn loam, 1 to 3 percent slopes | 14K | Well drained | C | Somewhat limited | Very limited |
| Truckton sandy loam, 0 to 3 percent slopes | 14K | Well drained | A | Not limited | Very limited |
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 31% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.
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.