Soil series profile
Tivoli soil series
Tivoli is a excessively drained soil with a fine sand surface, mapped on 586,780 acres in 82 counties across 5 states. Hydrologic group A.
- Drainage class
- Excessively drained 99% of mapped acres
- Hydrologic group
- A 95% of mapped acres
- Typical topsoil pH
- 7.0 neutral · range 6.1–7.2
- Mapped area
- 587k acres in 82 counties, 5 states
Typical Tivoli profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–10 in (H1) | Fine sand | 7.2 | 5% | 94% | 2% |
| 10–60 in (H2) | Fine sand | 7.2 | 7% | 92% | 0.3% |
What this means
What Tivoli soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Tivoli soils is neutral: pH 7.0 (most land between 6.1 and 7.2), the range most vegetables, flowers and lawn grasses prefer.
Sandy topsoil covers 94% of mapped Tivoli acres. It drains fast and warms early in spring, but dries out and loses nutrients quickly: mulch, compost and steady watering help. The most common surface texture is fine sand (77% of mapped Tivoli acres).
100% of mapped Tivoli acres is excessively or somewhat excessively drained: water moves through fast, so gardens need more frequent watering in dry spells.
For lawns and yards
95% 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 94% of the acres in mapped Tivoli soils very limited, 0% somewhat limited and 0% not limited (6% 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 Tivoli soil is found
Mapped acres
Tivoli is mapped in Oklahoma, Texas, Kansas, New Mexico and Colorado. The 60 counties with the most Tivoli acres:
| County | Acres | Share of county land |
|---|---|---|
| Harding County, NM | 56,281 | 3.9% |
| Woods County, OK | 53,634 | 6.6% |
| Woodward County, OK | 51,806 | 6.3% |
| Quay County, NM | 38,985 | 2.1% |
| Harper County, OK | 30,022 | 4.5% |
| Wheeler County, TX | 27,772 | 4.7% |
| Edwards County, KS | 21,460 | 5.4% |
| Clark County, KS | 21,362 | 3.4% |
| Gray County, TX | 21,174 | 3.6% |
| Kiowa County, KS | 20,627 | 4.5% |
| Hall County, TX | 20,429 | 3.5% |
| Baca County, CO | 16,930 | 1.0% |
| Ford County, KS | 14,601 | 2.1% |
| Wilbarger County, TX | 11,761 | 1.9% |
| Major County, OK | 11,496 | 1.9% |
| Collingsworth County, TX | 10,890 | 1.9% |
| Comanche County, KS | 10,554 | 2.1% |
| Mitchell County, TX | 10,341 | 1.8% |
| Dewey County, OK | 10,231 | 1.6% |
| Hardeman County, TX | 10,082 | 2.3% |
| Donley County, TX | 9,400 | 1.6% |
| Gray County, KS | 8,523 | 1.5% |
| Stafford County, KS | 8,451 | 1.7% |
| Oldham County, TX | 8,276 | 0.9% |
| Motley County, TX | 7,756 | 1.2% |
| Ellis County, OK | 6,326 | 0.8% |
| Alfalfa County, OK | 5,422 | 1.0% |
| Fisher County, TX | 4,169 | 0.7% |
| Kent County, TX | 4,156 | 0.7% |
| Pawnee County, KS | 4,156 | 0.9% |
| Barber County, KS | 3,818 | 0.5% |
| Hemphill County, TX | 3,667 | 0.6% |
| Briscoe County, TX | 3,577 | 0.6% |
| Beckham County, OK | 3,448 | 0.6% |
| Kingman County, KS | 2,711 | 0.5% |
| Scurry County, TX | 2,574 | 0.4% |
| Garza County, TX | 2,521 | 0.4% |
| Sumner County, KS | 2,497 | 0.3% |
| Cowley County, KS | 1,765 | 0.2% |
| Barton County, KS | 1,630 | 0.3% |
| Potter County, TX | 1,610 | 0.3% |
| Hutchinson County, TX | 1,510 | 0.3% |
| Harper County, KS | 1,480 | 0.3% |
| Lipscomb County, TX | 1,453 | 0.2% |
| Wichita County, TX | 1,413 | 0.4% |
| Cotton County, OK | 1,380 | 0.3% |
| Harvey County, KS | 1,185 | 0.3% |
| Custer County, OK | 979 | 0.2% |
| Roberts County, TX | 892 | 0.2% |
| Roger Mills County, OK | 837 | 0.1% |
| Sedgwick County, KS | 831 | 0.1% |
| Clay County, TX | 800 | 0.1% |
| Meade County, KS | 677 | 0.1% |
| Carson County, TX | 656 | 0.1% |
| Blaine County, OK | 636 | 0.1% |
| Seward County, KS | 620 | 0.2% |
| Pratt County, KS | 607 | 0.1% |
| Rice County, KS | 586 | 0.1% |
| Cottle County, TX | 551 | 0.1% |
| Crosby County, TX | 421 | 0.1% |
Septic absorption fields
NRCS rating, share of Tivoli acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 94.1% |
| Not rated | 5.9% |
Drainage, water table and flooding
Share of Tivoli 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 5–18% (median 14%).
- Topsoil organic matter
- Median 0.8%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 98.8% |
| Somewhat excessively drained | 1.2% |
| Well drained | 0.0% |
| 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) | 95.4% |
| 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 | 0.0% |
| B/D: D as is, B if drained | 0.0% |
| C/D: D as is, C if drained | 0.0% |
| Not rated | 4.6% |
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 Tivoli (component kind "Series") in SSURGO: 586,780 acres.
- Method
- Shares are by mapped acres of Tivoli components. The profile comes from the single largest Tivoli component. Full methodology.