Soil series profile
Dinuba soil series
Dinuba is a moderately well drained soil with a sandy loam surface, mapped on 75,957 acres in 4 counties in CA. Hydrologic group C.
- Drainage class
- Moderately well drained 95% of mapped acres
- Hydrologic group
- C 91% of mapped acres
- Typical topsoil pH
- 7.2 neutral · range 7.2–7.9
- Mapped area
- 76k acres in 4 counties, 1 state
Typical Dinuba profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–10 in (H1) | Sandy loam | 7.2 | 11% | 66% | 0.75% |
| 10–30 in (H2) | Sandy loam | 7.2 | 14% | 67% | 0.25% |
| 30–60 in (H3) | Very fine sand, silt loam | 8.2 | 14% | 30% | 0% |
What this means
What Dinuba soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Dinuba soils is neutral: pH 7.2 (most land between 7.2 and 7.9), the range most vegetables, flowers and lawn grasses prefer.
Loamy topsoil (loam, silt loam and similar) covers 95% of mapped Dinuba acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is sandy loam (66% of mapped Dinuba acres).
95% of mapped Dinuba acres is moderately well to excessively drained, which suits most garden plants.
For lawns and yards
On 91% 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.
For a septic system
For conventional septic absorption fields, NRCS rates 95% of the acres in mapped Dinuba soils very limited, 0% somewhat limited and 0% not limited (5% 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.
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Where Dinuba soil is found
Mapped acres
Dinuba is mapped in California.
| County | Acres | Share of county land |
|---|---|---|
| Stanislaus County, CA | 59,772 | 6.1% |
| Madera County, CA | 10,802 | 1.1% |
| Merced County, CA | 4,994 | 0.4% |
| Fresno County, CA | 388 | 0.0% |
Septic absorption fields
NRCS rating, share of Dinuba acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 95.3% |
| Not rated | 4.7% |
Drainage, water table and flooding
Share of Dinuba acres
- Depth to seasonal high water table
- None reported within about 6.5 feet (median where reported).
- Flooding
- Not mapped as flooding on most acres.
- Slope
- Typically 1–1% (median 1%).
- Topsoil organic matter
- Median 0.8%.
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 | 95.3% |
| Somewhat poorly drained | 0.0% |
| Poorly drained | 0.0% |
| Very poorly drained | 0.0% |
| Not rated | 4.7% |
Hydrologic soil group
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.9% |
| B: moderate infiltration | 3.9% |
| C: slow infiltration | 90.5% |
| D: very slow infiltration (clayey, shallow or wet) | 0.0% |
| A/D: D as is, A if drained | 0.0% |
| B/D: D as is, B if drained | 0.0% |
| C/D: D as is, C if drained | 0.0% |
| Not rated | 4.7% |
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 Dinuba (component kind "Series") in SSURGO: 75,957 acres.
- Method
- Shares are by mapped acres of Dinuba components. The profile comes from the single largest Dinuba component. Full methodology.