Soil series profile

Cyclone soil series

Cyclone is a poorly drained soil with a silty clay loam surface, mapped on 342,718 acres in 43 counties across 2 states. Hydrologic group B/D.

#962 by mapped area fine-silty Typic Argiaquolls (Mollisols)

Drainage class
Poorly drained
99% of mapped acres
Hydrologic group
B/D
99% of mapped acres
Typical topsoil pH
6.3
slightly acidic · range 6.3–6.3
Mapped area
343k
acres in 43 counties, 2 states

Typical Cyclone profile

Texture and pH by depth

Typical Cyclone soil profile by depth 0 in 20 in 40 in 60 in 0–10 in · Ap · pH 6.3 · 27% clay Silty clay loam 10–14 in · A · pH 6.3 · 12% clay Silt loam 14–20 in · Btg1 · pH 6.9 · 32% clay Silty clay loam 20–49 in · Btg2 · pH 7.3 · 30% clay Silty clay loam 49–60 in · 2Btg3 · pH 7.3 · 24% clay Loam 60–79 in · 2C · pH 8.1 · 15% clay Loam
Depth to scale. More strongly shaded layers hold more clay. Horizon names are the soil survey's (A = topsoil, B = subsoil, C = parent material).
Show as a table
Typical Cyclone horizons (representative values)
Depth Texture pH Clay Sand Organic matter
0–10 in (Ap) Silty clay loam 6.3 27% 14% 4.5%
10–14 in (A) Silt loam 6.3 12% 19% 4.5%
14–20 in (Btg1) Silty clay loam 6.9 32% 12% 1.25%
20–49 in (Btg2) Silty clay loam 7.3 30% 12% 1.25%
49–60 in (2Btg3) Loam 7.3 24% 34% 1.25%
60–79 in (2C) Loam 8.1 15% 40% 0.75%

Representative values from the most extensive Cyclone map unit (Cyclone silty clay loam, 0 to 2 percent slopes, survey area IN065). Other map units of this series vary within the series range.

Hands holding dark garden soil
Stock photo for illustration, not a sample of this soil series. Credit on the Sources & method page.

What this means

What Cyclone soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Cyclone soils is slightly acidic: pH 6.3, the range most vegetables, flowers and lawn grasses prefer.

Loamy topsoil (loam, silt loam and similar) covers 99% of mapped Cyclone acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silty clay loam (51% of mapped Cyclone acres).

99% of mapped Cyclone 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 99% 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 Cyclone soils very limited, 0% somewhat limited and 0% not limited (1% 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.

Generated from the mapped numbers above using fixed rules, not a site visit. See how these notes are written.

Where Cyclone soil is found

Mapped acres

Cyclone is mapped in Indiana and Ohio.

Counties with the most mapped Cyclone soil
County Acres Share of county land
Henry County, IN 43,691 17.4%
Clinton County, IN 33,999 13.2%
Cass County, IN 32,073 12.2%
Carroll County, IN 32,072 13.8%
Madison County, IN 29,301 10.2%
Decatur County, IN 27,941 11.8%
Rush County, IN 21,838 8.4%
Boone County, IN 20,775 7.7%
Montgomery County, IN 14,477 4.5%
Wabash County, IN 14,171 5.4%
Bartholomew County, IN 10,684 4.1%
Franklin County, IN 8,735 3.6%
Union County, IN 6,563 6.4%
Preble County, OH 6,477 2.4%
Hamilton County, IN 6,012 2.4%
Tipton County, IN 4,916 3.0%
Warren County, IN 4,751 2.1%
Howard County, IN 4,664 2.5%
Clinton County, OH 2,314 0.9%
Fountain County, IN 2,259 0.9%
Putnam County, IN 2,177 0.7%
Fayette County, IN 1,953 1.4%
Hendricks County, IN 1,867 0.7%
Butler County, OH 1,711 0.6%
Warren County, OH 1,364 0.5%
Morgan County, IN 950 0.4%
Greene County, OH 932 0.4%
Miami County, IN 877 0.4%
Wayne County, IN 733 0.3%
Montgomery County, OH 655 0.2%
Parke County, IN 525 0.2%
Johnson County, IN 366 0.2%
Jennings County, IN 348 0.1%
Randolph County, IN 184 0.1%
Champaign County, OH 103 0.0%
Hancock County, IN 82 0.0%
Hamilton County, OH 66 0.0%
Highland County, OH 60 0.0%
Tippecanoe County, IN 35 0.0%
Marion County, IN 16 0.0%
Delaware County, IN 3 0.0%
Brown County, IN 1 0.0%
Darke County, OH 0 0.0%

Septic absorption fields

NRCS rating, share of Cyclone acres

Not limited 0%
Somewhat limited 0%
Very limited 99%
Not rated 1%
Septic tank absorption field rating across mapped Cyclone acres. Scale 0 to 100% of mapped land.
Show as a table
Septic tank absorption field rating across mapped Cyclone acres.
CategoryShare of acres
Not limited0.0%
Somewhat limited0.0%
Very limited98.9%
Not rated1.1%

Drainage, water table and flooding

Share of Cyclone acres

Depth to seasonal high water table
About 2 inches (median where reported); within 18 inches on 99% of acres.
Flooding
Not mapped as flooding on most acres.
Slope
Typically 0–0% (median 0%).
Topsoil organic matter
Median 4.5%.

Drainage class

Excessively drained 0%
Somewhat excessively drained 0%
Well drained 0%
Moderately well drained 0%
Somewhat poorly drained 0%
Poorly drained 99%
Very poorly drained 0%
Not rated 1%
Drainage class across mapped Cyclone acres. Scale 0 to 100% of mapped land.
Show as a table
Drainage class across mapped Cyclone acres.
CategoryShare of acres
Excessively drained0.0%
Somewhat excessively drained0.0%
Well drained0.0%
Moderately well drained0.0%
Somewhat poorly drained0.0%
Poorly drained98.9%
Very poorly drained0.0%
Not rated1.1%

Hydrologic soil group

A: fast infiltration (mostly sandy or gravelly) 0%
B: moderate infiltration 0%
C: slow infiltration 0%
D: very slow infiltration (clayey, shallow or wet) 0%
A/D: D as is, A if drained 0%
B/D: D as is, B if drained 99%
C/D: D as is, C if drained 0%
Not rated 1%
Hydrologic soil group across mapped Cyclone acres. Scale 0 to 100% of mapped land.
Show as a table
Hydrologic soil group across mapped Cyclone acres.
CategoryShare of acres
A: fast infiltration (mostly sandy or gravelly)0.0%
B: moderate infiltration0.0%
C: slow infiltration0.0%
D: very slow infiltration (clayey, shallow or wet)0.0%
A/D: D as is, A if drained0.0%
B/D: D as is, B if drained98.9%
C/D: D as is, C if drained0.0%
Not rated1.1%

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 Cyclone (component kind "Series") in SSURGO: 342,718 acres.
Method
Shares are by mapped acres of Cyclone components. The profile comes from the single largest Cyclone component. Full methodology.

Independent reference site. No government affiliation or endorsement.

Full narrative description: USDA Official Soil Series Description for Cyclone.