Soil series profile
Telos soil series
Telos is a somewhat poorly drained soil with a silt loam surface, mapped on 1,203,739 acres in 12 counties across 3 states. Hydrologic group D.
- Drainage class
- Somewhat poorly drained 100% of mapped acres
- Hydrologic group
- D 100% of mapped acres
- Typical topsoil pH
- 4.1 extremely acidic · range 4.1–4.3
- Mapped area
- 1.2M acres in 12 counties, 3 states
Typical Telos profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–3 in (Oe) | Moderately decomposed plant material | Not reported | Not reported | Not reported | 53% |
| 3–5 in (E) | Silt loam | 4.1 | 14% | 34% | 2.8% |
| 5–13 in (Bs) | Loam | 4.6 | 14% | 38% | 5.2% |
| 13–19 in (BC) | Loam | 5.0 | 15% | 38% | 1.25% |
| 19–65 in (Cd) | Loam | 5.4 | 16% | 39% | 0.3% |

What this means
What Telos soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Telos soils is extremely acidic: pH 4.1 (most land between 4.1 and 4.3). 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.
Loamy topsoil (loam, silt loam and similar) covers 100% of mapped Telos acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (100% of mapped Telos acres).
100% of mapped Telos 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 100% 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 100% 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 100% of the acres in mapped Telos 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 Telos soil is found
Mapped acres
Telos is mapped in Maine, New Hampshire and Massachusetts.
| County | Acres | Share of county land |
|---|---|---|
| Aroostook County, ME | 356,784 | 8.4% |
| Piscataquis County, ME | 327,079 | 13.1% |
| Somerset County, ME | 221,658 | 8.7% |
| Penobscot County, ME | 106,443 | 5.0% |
| Washington County, ME | 105,928 | 6.7% |
| Franklin County, ME | 41,965 | 3.9% |
| Oxford County, ME | 33,597 | 2.6% |
| Waldo County, ME | 3,881 | 0.8% |
| Coos County, NH | 3,303 | 0.4% |
| Hancock County, ME | 1,410 | 0.1% |
| Kennebec County, ME | 1,312 | 0.2% |
| Worcester County, MA | 380 | 0.0% |
Septic absorption fields
NRCS rating, share of Telos 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 Telos acres
- Depth to seasonal high water table
- About 1.0 feet (12 in) (median where reported); within 18 inches on 100% of acres.
- Flooding
- Not mapped as flooding on most acres.
- Slope
- Typically 4–5% (median 5%).
- Topsoil organic matter
- Median 2.8%.
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 | 0.0% |
| Somewhat poorly drained | 100.0% |
| 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 | 0.0% |
| C: slow infiltration | 0.0% |
| D: very slow infiltration (clayey, shallow or wet) | 100.0% |
| 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 Telos (component kind "Series") in SSURGO: 1,203,739 acres.
- Method
- Shares are by mapped acres of Telos components. The profile comes from the single largest Telos component. Full methodology.