Isanti County, Minnesota
The dominant drainage class is Very poorly drained and the dominant hydrologic group is A/D (varies with drainage). 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 Isanti County, Minnesota.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Zimmerman fine sand, 1 to 6 percent slopes | 55K | Somewhat excessively drained | A | Not limited | Very limited |
| Rifle and Seelyeville soils | 28K | Very poorly drained | A/D | Very limited | Very limited |
| Lino loamy fine sand | 22K | Somewhat poorly drained | A/D | Very limited | Very limited |
| Seelyeville, occasionally ponded-Cathro, frequently ponded, complex, 0 to 1 percent slopes | 19K | Very poorly drained | A/D | Very limited | Very limited |
| Cushing, moderately eroded-Branstad loams, 2 to 15 percent slopes | 18K | Well drained | C | Somewhat limited | Very limited |
| Branstad loam, 2 to 6 percent slopes | 16K | Moderately well drained | C | Somewhat limited | Very limited |
| Anoka loamy fine sand, 2 to 7 percent slopes | 13K | Well drained | C | Not limited | Very limited |
| Isanti mucky loamy fine sand | 10K | Very poorly drained | A/D | Very limited | Very limited |
| Water | 9K | Not rated | Not rated | ||
| Zimmerman loamy fine sand and fine sand, 7 to 12 percent slopes | 7K | Excessively drained | A | Somewhat limited | Very limited |
| Talmoon-Alstad-Bluffton, frequently ponded, loams, 0 to 2 percent slopes | 7K | Poorly drained | C/D | Very limited | Very limited |
| Alstad-Branstad loams, 0 to 4 percent slopes | 7K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Alluvial land, poorly drained | 6K | Very poorly drained | B/D | Very limited | Very limited |
| Zimmerman fine sand, 6 to 12 percent slopes | 5K | Somewhat excessively drained | A | Somewhat limited | Very limited |
| Talmoon, Alstad, and Blomford soils, 0 to 2 percent slopes | 5K | Poorly drained | C/D | Very limited | Very limited |
| Grasston silt loam, 1 to 6 percent slopes | 4K | Moderately well drained | D | Somewhat limited | Very limited |
| Anoka loamy fine sand, 7 to 12 percent slopes | 3K | Well drained | B | Somewhat limited | Very limited |
| Cathro muck | 3K | Very poorly drained | B/D | Very limited | Very limited |
| Alluvial land, well drained | 3K | Moderately well drained | A | Very limited | Very limited |
| Markey muck | 3K | Very poorly drained | A/D | Very limited | Very limited |
What This Means
Building & Foundations
About 45% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 96% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.