Oscoda County Soil Data
Oscoda County, Michigan
Avg pH
3.5
Texture
Moderately decomposed plant material
Drainage
Excessively drained
Organic Matter
42.7%
Hydrologic Group
A
Data Story
About Soil in Oscoda County, Michigan
Extreme Acidity in Entisols
Oscoda County features some of the most acidic soil in the state with an average pH of 3.51. This is drastically lower than the national median of 6.5 and even the state average of 5.30. These Entisols represent young soils that are still developing their distinct layers and characteristics.
High Clay and Decomposed Matter
The soil is a complex mix of 42.4% sand and 23.2% clay, giving it more density than many neighboring counties. It is officially classified as moderately decomposed plant material, which indicates a thick layer of organic debris. This unique composition provides a heavy, rich texture that holds together well under pressure.
Vast Organic Reserves and High AWC
Oscoda boasts an impressive organic matter content of 42.69%, significantly higher than the state average of 19.76%. Its available water capacity of 0.272 in/in also beats the state benchmark of 0.202. This means the soil is highly fertile and can sustain plants through dry periods better than most sand-dominant regions.
Excessively Drained Hydrologic Group A
Despite its high water capacity, the soil is classified as excessively drained and falls into Hydrologic Group A. Water moves through the profile very rapidly, which helps prevent root rot but can lead to nutrient leaching. It is ideal for building sites but requires careful fertilization for agricultural success.
Zone 5a Acid-Loving Harvests
In USDA Hardiness Zone 5a, Oscoda is a haven for acid-loving crops like blueberries, rhododendrons, and conifers. The heavy organic matter provides a buffet of nutrients, provided you manage the extreme acidity. If you are starting a garden, focus on native Michigan species that evolved for these specific conditions.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group A — Low Runoff
Sandy, well-drained soils with high infiltration rates. Water moves quickly through the soil profile. Lowest runoff potential when thoroughly wetted.
Drainage Class
Excessively drained
Water is removed very rapidly. Very sandy or gravelly soils with little water retention.
Soil Profile
Dominant texture: Moderately decomposed plant material
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Oscoda County have?
Oscoda County's soil is classified as Moderately decomposed plant material. This indicates the relative proportions of sand, silt, and clay — 42% sand, 32% silt, and 23% clay. Sandy soils drain quickly but may need more frequent irrigation and fertilization.
Is Oscoda County's soil acidic or alkaline?
Oscoda County's soil has a low pH of 3.5, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Oscoda County?
Oscoda County has a dominant drainage class of "Excessively drained." Moderate drainage allows adequate moisture retention while still permitting excess water to drain over time.
What crops or plants grow well in Oscoda County's soil?
Based on Oscoda County's Moderately decomposed plant material texture, pH of 3.5, and Excessively drained, the soil is well suited for acid-loving plants like blueberries and azaleas.
What USDA soil order is found in Oscoda County?
Oscoda County's dominant soil order is Entisols. Entisols are recently formed soils with little to no horizon development. They are common on floodplains, steep slopes, and sandy deposits.
Planning your lawn? View lawn care data for Oscoda County on LawnByCounty.com →
Other Counties in Michigan
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.