Soil series profile
Rindge soil series
Rindge is a very poorly drained soil with a muck surface, mapped on 54,886 acres in 5 counties in CA. Hydrologic group A/D.
- Drainage class
- Very poorly drained 98% of mapped acres
- Hydrologic group
- A/D 95% of mapped acres
- Typical topsoil pH
- 5.2 strongly acidic · range 5.2–6.2
- Mapped area
- 55k acres in 5 counties, 1 state
Typical Rindge profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–10 in (Oap) | Muck | 5.2 | Not reported | Not reported | 28% |
| 10–71 in (Oa) | Muck | 5.5 | Not reported | Not reported | 44% |
| 71–79 in (2C) | Silty clay loam | 6.0 | 34% | 12% | 4% |

What this means
What Rindge soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Rindge soils is strongly acidic: pH 5.2 (most land between 5.2 and 6.2). Most vegetables and lawn grasses do best around 6.0 to 7.0, so lime is often needed; blueberries, azaleas and rhododendrons like it as it is.
Organic muck or peat is the most common topsoil (72% of mapped Rindge acres). It is rich and holds water, but is often wet, can be acidic, and settles when drained. The most common surface texture is muck (72% of mapped Rindge acres).
98% of mapped Rindge acres is somewhat poorly to very poorly drained, so soil stays soggy for long spells after rain and in wet seasons. Raised beds, plants that tolerate wet feet, and not working the soil while wet all help.
For lawns and yards
On 96% of mapped acres, rain soaks in slowly (hydrologic groups C and D, including dual groups that are D until drained). Expect runoff and puddles after heavy rain: core-aerate compacted lawns and keep ground sloping away from foundations.
A seasonal high water table comes within 18 inches of the surface on 93% of mapped acres, often in spring. Basements, sump pumps and lawns in low spots feel it first.
For a septic system
For conventional septic absorption fields, NRCS rates 96% of the acres in mapped Rindge soils very limited, 0% somewhat limited and 0% not limited (4% not rated, such as urban land, pits or water).
Where the soil is very limited (slow permeability, a high water table, flooding, shallow bedrock or steep slopes), alternative systems such as mound or sand-filter designs are common and cost more.
Flooding is mapped on 30% of the acres (0% occasional, 2% frequent).
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Where Rindge soil is found
Mapped acres
Rindge is mapped in California.
| County | Acres | Share of county land |
|---|---|---|
| San Joaquin County, CA | 33,122 | 3.7% |
| Sacramento County, CA | 11,183 | 1.8% |
| Contra Costa County, CA | 9,502 | 2.1% |
| Monterey County, CA | 956 | 0.0% |
| Solano County, CA | 124 | 0.0% |
Septic absorption fields
NRCS rating, share of Rindge acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 95.8% |
| Not rated | 4.2% |
Drainage, water table and flooding
Share of Rindge acres
- Depth to seasonal high water table
- About 0 inches (median where reported); within 18 inches on 93% of acres.
- Flooding
- Mapped as flooding on 30% of acres (0% occasional, 2% frequent).
- Slope
- Typically 0–0% (median 0%).
- Topsoil organic matter
- Median 28%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 0.0% |
| Somewhat excessively drained | 0.0% |
| Well drained | 0.0% |
| Moderately well drained | 0.0% |
| Somewhat poorly drained | 0.0% |
| Poorly drained | 0.0% |
| Very poorly drained | 98.0% |
| Not rated | 2.0% |
Hydrologic soil group
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.1% |
| B: moderate infiltration | 0.0% |
| C: slow infiltration | 0.0% |
| D: very slow infiltration (clayey, shallow or wet) | 0.0% |
| A/D: D as is, A if drained | 95.2% |
| B/D: D as is, B if drained | 0.5% |
| C/D: D as is, C if drained | 0.0% |
| Not rated | 4.2% |
Sources & data dates
- Source
- USDA NRCS Soil Survey Geographic Database (SSURGO), queried through Soil Data Access. Public domain.
- Data date
- SSURGO as published on November 3, 2026 (most recent survey area update October 26, 2026). NRCS refreshes SSURGO each October.
- Scope
- All map unit components named Rindge (component kind "Series") in SSURGO: 54,886 acres.
- Method
- Shares are by mapped acres of Rindge components. The profile comes from the single largest Rindge component. Full methodology.