Soil series profile
Huckle soil series
Huckle is a well drained soil with a ashy silt loam surface, mapped on 116,085 acres in 8 counties across 2 states. Hydrologic group B.
- Drainage class
- Well drained 100% of mapped acres
- Hydrologic group
- B 100% of mapped acres
- Typical topsoil pH
- 6.2 slightly acidic · range 6.2–7.0
- Mapped area
- 116k acres in 8 counties, 2 states
Typical Huckle profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–1 in (Oi) | Slightly decomposed plant material | 5.5 | 7% | 27% | 75% |
| 1–2 in (Oe) | Moderately decomposed plant material | 5.5 | 7% | 27% | 70% |
| 2–5 in (A) | Ashy silt loam | 6.2 | 7% | 27% | 6.5% |
| 5–12 in (Bw1) | Ashy silt loam | 6.3 | 7% | 27% | 2.65% |
| 12–18 in (Bw2) | Very channery ashy silt loam | 6.3 | 7% | 27% | 1.8% |
| 18–28 in (2Bw3) | Very channery loam | 5.9 | 10% | 45% | 0.4% |
| 28–33 in (2BC) | Very channery loam | 5.9 | 10% | 45% | 0.4% |
| 33–49 in (2C) | Extremely channery sandy loam | 5.9 | 6% | 65% | 0.25% |
| 49–59 in (2R) | Bedrock | Not reported | Not reported | Not reported | Not reported |
What this means
What Huckle soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Huckle soils is slightly acidic: pH 6.2 (most land between 6.2 and 7.0), the range most vegetables, flowers and lawn grasses prefer.
Loamy topsoil (loam, silt loam and similar) covers 100% of mapped Huckle acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is ashy silt loam (100% of mapped Huckle acres).
100% of mapped Huckle acres is moderately well to excessively drained, which suits most garden plants.
For lawns and yards
Most land is in hydrologic groups B and C, where rain soaks in at a moderate pace.
For a septic system
For conventional septic absorption fields, NRCS rates 100% of the acres in mapped Huckle soils very limited, 0% somewhat limited and 0% not limited.
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 Huckle soil is found
Mapped acres
Huckle is mapped in Washington and Idaho.
| County | Acres | Share of county land |
|---|---|---|
| Stevens County, WA | 57,336 | 3.9% |
| Kootenai County, ID | 29,075 | 4.2% |
| Pend Oreille County, WA | 18,095 | 2.2% |
| Benewah County, ID | 11,409 | 2.7% |
| Spokane County, WA | 131 | 0.0% |
| Shoshone County, ID | 20 | 0.0% |
| Latah County, ID | 16 | 0.0% |
| Whitman County, WA | 3 | 0.0% |
Septic absorption fields
NRCS rating, share of Huckle acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 100.0% |
Drainage, water table and flooding
Share of Huckle 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 28–41% (median 40%).
- Topsoil organic matter
- Median 6.5%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 0.0% |
| Somewhat excessively drained | 0.0% |
| Well drained | 100.0% |
| Moderately well drained | 0.0% |
| Somewhat poorly drained | 0.0% |
| Poorly drained | 0.0% |
| Very poorly drained | 0.0% |
Hydrologic soil group
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.0% |
| B: moderate infiltration | 100.0% |
| C: slow infiltration | 0.0% |
| 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% |
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 Huckle (component kind "Series") in SSURGO: 116,085 acres.
- Method
- Shares are by mapped acres of Huckle components. The profile comes from the single largest Huckle component. Full methodology.