Soil series profile
Weiser soil series
Weiser is a well drained soil with a extremely gravelly fine sandy loam surface, mapped on 303,954 acres in 4 counties across 2 states. Hydrologic group A.
- Drainage class
- Well drained >99% of mapped acres
- Hydrologic group
- A 91% of mapped acres
- Typical topsoil pH
- 8.2 moderately alkaline · range 8.2–8.5
- Mapped area
- 304k acres in 4 counties, 2 states
Typical Weiser profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–6 in (H1) | Extremely gravelly fine sandy loam | 8.2 | 11% | 71% | 0.25% |
| 6–60 in (H2) | Extremely gravelly sandy loam | 8.4 | 9% | 68% | 0.25% |
What this means
What Weiser soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Weiser soils is moderately alkaline: pH 8.2 (most land between 8.2 and 8.5). Acid-loving plants such as blueberries and azaleas struggle without amended beds, and some trees and shrubs show iron chlorosis (yellow leaves with green veins).
Loamy topsoil (loam, silt loam and similar) covers 51% of mapped Weiser acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is extremely gravelly fine sandy loam (61% of mapped Weiser acres).
>99% of mapped Weiser acres is moderately well to excessively drained, which suits most garden plants.
For lawns and yards
91% of mapped acres is in hydrologic group A, where water soaks in fast. Lawns there dry out quickly; deeper, less frequent watering and organic matter help.
For a septic system
For conventional septic absorption fields, NRCS rates 13% of the acres in mapped Weiser soils very limited, 62% somewhat limited and 25% not limited.
Flooding is mapped on 60% of the acres (0% occasional, 0% frequent).
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Where Weiser soil is found
Mapped acres
Weiser is mapped in Nevada and California.
| County | Acres | Share of county land |
|---|---|---|
| Clark County, NV | 234,768 | 4.9% |
| Lincoln County, NV | 36,264 | 0.6% |
| Nye County, NV | 21,714 | 0.2% |
| San Bernardino County, CA | 5,045 | 0.1% |
Septic absorption fields
NRCS rating, share of Weiser acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 24.8% |
| Somewhat limited | 62.1% |
| Very limited | 13.0% |
| Not rated | 0.1% |
Drainage, water table and flooding
Share of Weiser acres
- Depth to seasonal high water table
- None reported within about 6.5 feet (median where reported).
- Flooding
- Mapped as flooding on 60% of acres (0% occasional, 0% frequent).
- Slope
- Typically 3–23% (median 5%).
- Topsoil organic matter
- Median 0.2%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 0.0% |
| Somewhat excessively drained | 0.0% |
| Well drained | 99.9% |
| Moderately well drained | 0.0% |
| Somewhat poorly drained | 0.0% |
| Poorly drained | 0.0% |
| Very poorly drained | 0.0% |
| Not rated | 0.1% |
Hydrologic soil group
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 90.5% |
| B: moderate infiltration | 9.2% |
| C: slow infiltration | 0.2% |
| 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 | 0.1% |
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 Weiser (component kind "Series") in SSURGO: 303,954 acres.
- Method
- Shares are by mapped acres of Weiser components. The profile comes from the single largest Weiser component. Full methodology.