Soil series profile
Markey soil series
Markey is a very poorly drained soil with a mucky peat surface, mapped on 855,756 acres in 112 counties across 7 states. Hydrologic group A/D.
- Drainage class
- Very poorly drained 100% of mapped acres
- Hydrologic group
- A/D 96% of mapped acres
- Typical topsoil pH
- 6.0 moderately acidic · range 5.4–7.5
- Mapped area
- 856k acres in 112 counties, 7 states
Typical Markey profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–10 in (Oe1) | Mucky peat | 6.0 | Not reported | Not reported | 80% |
| 10–22 in (Oa2) | Muck | 6.0 | Not reported | Not reported | 75% |
| 22–31 in (Oa3) | Muck | 6.2 | Not reported | Not reported | 65% |
| 31–79 in (Cg) | Sand | 6.5 | 1% | 96% | 0.25% |

What this means
What Markey soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Markey soils is moderately acidic: pH 6.0 (most land between 5.4 and 7.5). Many vegetables grow well here, and some gardens benefit from a little lime. Test before adding any.
Organic muck or peat is the most common topsoil (>99% of mapped Markey acres). It is rich and holds water, but is often wet, can be acidic, and settles when drained. The most common surface texture is muck (88% of mapped Markey acres).
100% of mapped Markey 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 >99% 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 >99% of the acres in mapped Markey 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 Markey soil is found
Mapped acres
Markey is mapped in Minnesota, Wisconsin, Michigan, North Dakota, New York, Vermont and Maine. The 60 counties with the most Markey acres:
| County | Acres | Share of county land |
|---|---|---|
| Schoolcraft County, MI | 85,438 | 11.4% |
| Beltrami County, MN | 55,146 | 3.4% |
| Lake of the Woods County, MN | 54,793 | 6.6% |
| Marinette County, WI | 38,374 | 4.3% |
| Portage County, WI | 32,136 | 6.2% |
| Wadena County, MN | 27,826 | 8.1% |
| Oneida County, WI | 27,273 | 3.8% |
| Dickinson County, MI | 24,874 | 4.5% |
| Roseau County, MN | 24,573 | 2.3% |
| Oconto County, WI | 23,911 | 3.8% |
| Cass County, MN | 22,422 | 1.7% |
| Shawano County, WI | 21,774 | 3.8% |
| Aitkin County, MN | 20,493 | 1.8% |
| Adams County, WI | 18,597 | 4.5% |
| Koochiching County, MN | 17,533 | 0.8% |
| Clare County, MI | 16,020 | 4.4% |
| Waupaca County, WI | 15,526 | 3.2% |
| Luce County, MI | 15,436 | 2.7% |
| Mackinac County, MI | 14,366 | 2.2% |
| Price County, WI | 13,345 | 1.7% |
| Chippewa County, MI | 13,072 | 1.3% |
| Stearns County, MN | 12,986 | 1.5% |
| Morrison County, MN | 12,503 | 1.7% |
| Douglas County, WI | 12,302 | 1.5% |
| Marshall County, MN | 10,797 | 0.9% |
| Anoka County, MN | 10,637 | 3.9% |
| Todd County, MN | 10,545 | 1.7% |
| Burnett County, WI | 10,526 | 2.0% |
| Sherburne County, MN | 9,865 | 3.5% |
| Dunn County, WI | 7,994 | 1.5% |
| Iron County, WI | 7,593 | 1.6% |
| Chippewa County, WI | 7,416 | 1.2% |
| Vilas County, WI | 7,376 | 1.3% |
| Washburn County, WI | 7,045 | 1.4% |
| Menominee County, WI | 6,552 | 2.9% |
| Door County, WI | 6,266 | 1.9% |
| Forest County, WI | 6,259 | 1.0% |
| Sawyer County, WI | 6,230 | 0.8% |
| Rusk County, WI | 5,698 | 1.0% |
| Clearwater County, MN | 5,690 | 0.9% |
| Outagamie County, WI | 5,541 | 1.4% |
| Leelanau County, MI | 4,806 | 2.2% |
| Delta County, MI | 4,789 | 0.6% |
| Kittson County, MN | 4,268 | 0.6% |
| Polk County, MN | 4,150 | 0.3% |
| Ashland County, WI | 4,127 | 0.6% |
| Kewaunee County, WI | 4,113 | 1.9% |
| Buffalo County, WI | 3,940 | 0.9% |
| Langlade County, WI | 3,822 | 0.7% |
| Alger County, MI | 3,813 | 0.7% |
| Chisago County, MN | 3,671 | 1.4% |
| Florence County, WI | 3,102 | 1.0% |
| Crow Wing County, MN | 2,906 | 0.5% |
| Lincoln County, WI | 2,877 | 0.5% |
| Isanti County, MN | 2,817 | 1.0% |
| Taylor County, WI | 2,661 | 0.4% |
| Osceola County, MI | 2,579 | 0.7% |
| Mahnomen County, MN | 2,516 | 0.7% |
| Polk County, WI | 2,484 | 0.4% |
| Pope County, MN | 2,313 | 0.5% |
Septic absorption fields
NRCS rating, share of Markey acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 99.8% |
| Not rated | 0.2% |
Drainage, water table and flooding
Share of Markey acres
- Depth to seasonal high water table
- About 0 inches (median where reported); within 18 inches on 100% of acres.
- Flooding
- Mapped as flooding on 2% of acres (0% occasional, 2% frequent).
- Slope
- Typically 0–1% (median 0%).
- Topsoil organic matter
- Median 70%.
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 | 0.0% |
| Poorly drained | 0.0% |
| Very poorly drained | 100.0% |
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) | 0.0% |
| A/D: D as is, A if drained | 95.6% |
| B/D: D as is, B if drained | 4.2% |
| C/D: D as is, C if drained | 0.0% |
| Not rated | 0.2% |
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 Markey (component kind "Series") in SSURGO: 855,756 acres.
- Method
- Shares are by mapped acres of Markey components. The profile comes from the single largest Markey component. Full methodology.