Soils in Washington County, Rhode Island
Washington County, Rhode Island has 131,045 acres of well-drained soil across 183 distinct soil map units. The map below shows every NRCS soil map unit inside the county boundary.
Washington County, Rhode Island at a glance
| Well-drained land | 131,045 acres |
|---|---|
| Share of mapped soil that is well drained | 58.1% |
| Poorly drained land | 44,214 acres |
| Most common drainage class | Well drained — 86,593 acres |
| Distinct soil map units | 183 |
| Largest soil map unit | Canton and Charlton fine sandy loams, 0 to 8 percent slopes, very stony — 17,905 acres |
| Share with hydrologic soil group A or B (high infiltration) | 57.8% |
Washington County, Rhode Island is home to 129,795 residents. Land Owl's soils layer records the following within the county boundary — Well-drained land: 131,045 acres. Share of mapped soil that is well drained: 58.1%. Poorly drained land: 44,214 acres. Most common drainage class: Well drained — 86,593 acres. Distinct soil map units: 183. Largest soil map unit: Canton and Charlton fine sandy loams, 0 to 8 percent slopes, very stony — 17,905 acres. Share with hydrologic soil group A or B (high infiltration): 57.8%. Every feature shown on the map above is clickable, and the figures on this page are derived from the same data the map renders, so they always agree. A free Land Owl account adds parcel boundaries, ownership records, flood zones, wetlands and topography over the same view.
Frequently asked questions
- What are the soils like in Washington County, Rhode Island?
- The USDA soil survey maps 131,045 acres of Washington County, Rhode Island as well drained and 44,214 acres as poorly drained. Drainage class and hydrologic soil group are the two properties that most often decide whether a rural lot can take a septic system and a driveway.
- Is this soil map free to use?
- Yes. This map is free to view. A free Land Owl account unlocks the other data layers, parcel boundaries and ownership records.
- Where does this data come from?
- Land Owl maps soils from the USDA Natural Resources Conservation Service SSURGO soil survey. SSURGO describes soil MAP UNITS at survey scale — it is a screening tool for shortlisting land, not a substitute for a site-specific soil evaluation or a septic percolation test, both of which your health department will want before it permits a system.
- Can I use this soil map to tell whether land will perc?
- It is the right place to start and the wrong place to finish. Drainage class and hydrologic soil group tell you which parcels are worth a site visit, but a health department permits a septic system on a percolation test dug on the actual lot, not on the survey.
See every layer over Washington County
Parcel boundaries, ownership, flood zones, soils, wetlands and topography on one map.
Sign up free