LOCATION ORRVILLE OH IN KY PA VA WVEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, nonacid, mesic Fluventic Endoaquepts
TYPICAL PEDON: Orrville silt loam, on a level area in a cultivated field at an elevation of about 640 feet above msl. (Colors are for moist soil unless otherwise stated.)
Ap-- 0 to 9 inches; dark grayish brown (10YR 4/2) silt loam, light brownish gray (10YR 6/2) dry; weak medium and fine granular structure; friable; few fine very dark gray (10YR 3/1) iron and manganese oxide concretions in the matrix; strongly acid; abrupt smooth boundary. (6 to 12 inches thick.)
Bw-- 9 to 18 inches; yellowish brown (10YR 5/4) silt loam; weak medium and fine subangular blocky structure; friable; few fine very dark gray (10YR 3/1) iron and manganese oxide concretions in the matrix; common medium distinct gray (10YR 5/1) iron depletions in the matrix; common medium distinct yellowish brown (10YR 5/8) masses of iron oxide accumulation in the matrix strongly acid; clear smooth boundary. (3 to 22 inches thick.)
Bg1-- 18 to 30 inches; light brownish gray (10YR 6/2) silt loam; weak coarse prismatic structure parting to weak coarse subangular blocky; friable; few fine very dark gray (10YR 3/1) iron and manganese oxide concretions in the matrix; common faint grayish brown (10YR 5/2) coatings on vertical faces of peds; many medium prominent strong brown (7.5YR 5/6) and few fine prominent yellowish brown (10YR 5/6) masses of iron oxide accumulation in the matrix; strongly acid; clear smooth boundary.
Bg2-- 30 to 41 inches; grayish brown (10YR 5/2) silt loam; weak coarse and medium subangular blocky structure; friable; many medium prominent reddish brown (5YR 4/4) masses of iron oxide accumulation in the matrix; few fine very dark gray (10YR 3/1) iron and manganese oxide concretions in the matrix; moderately acid; abrupt smooth boundary. (Combined thickness of the Bg horizons is 3 to 36 inches.)
C-- 41 to 60 inches; grayish brown (10YR 5/2) and dark grayish brown (10YR 4/2) stratified loamy sand and sandy loam; massive; loose and very friable; many medium distinct dark reddish brown (5YR 3/4) masses of iron oxide accumulation in the matrix; moderately acid.
TYPE LOCATION: Cuyahoga County, Ohio; Village of Brecksville, about 625 feet east and 438 feet north of the intersection of Snowville and Riverview Roads, T. 5 N., R. 11 W.; USGS Northfield, OH topographic quadrangle; Latitude 41 degrees, 17 minutes, 12 seconds N. and Longitude 81 degrees, 34 minutes, 18 seconds W., NAD 1927.
RANGE IN CHARACTERISTICS: Thickness of the solum ranges from 24 to 50 inches. Average clay content ranges from 18 to 30 percent and average sand content coarser than very fine sand ranges from 15 to 40 percent in the particle-size control section.
The Ap horizon has hue of 10YR or 2.5Y, value of 4 (3 or 4 unrubbed and 6 or more dry), and chroma of 2. Thin A horizons in some pedons have value of 2 or 3, and chroma of 1 or 2. Texture is silt loam or loam, and less commonly fine sandy loam or sandy loam. Structure is weak or moderate, fine to coarse, granular. Rock fragment content ranges from 0 to 5 percent. Reaction is slightly acid to strongly acid, unless limed.
The Bw horizon has hue of 10YR or 2.5Y, value of 4 to 6, and chroma of 3 to 6. Texture is silt loam or loam, and less commonly silty clay loam or clay loam. Structure is weak, fine to coarse, subangular blocky. Rock fragment content ranges from 0 to 15 percent. Reaction is slightly acid to strongly acid.
The Bg horizon has hue of 10YR to 5Y, or is neutral, value of 4 to 6, and chroma of 0 to 2. Texture is silt loam or loam, and less commonly silty clay loam or clay loam. Some pedons have thin subhorizons of loamy sand, fine sandy loam, or sandy loam. Structure is weak or moderate, very fine to coarse, subangular blocky or prismatic. Rock fragment content ranges from 0 to 15 percent. Reaction is slightly acid to very strongly acid.
Some pedons have a BC horizon. It has hue of 10YR to 5Y, or is neutral, value 4 to 7, and chroma of 0 to 6. Texture is silt loam, loam, or sandy loam. Structure is weak, fine to coarse, subangular blocky. Rock fragment content ranges from 0 to 25 percent. Reaction is slightly acid to strongly acid.
The C horizon has hue of 10YR to 5Y, or is neutral, value of 4 to 7, and chroma of 0 to 6. Texture is silt loam, loam, fine sandy loam, or sandy loam. Stratification is typical. Below 40 inches, textures include loamy sand or gravelly analogues of those textures. Thin silty clay loam, clay loam, or stony layers are in some pedons. Rock fragment content ranges from 0 to 25 percent. Reaction is neutral to strongly acid. The bedrock substratum phase has sandstone at a depth of 60 to 80 inches.
COMPETING SERIES: This is the Bowmansville series. Bowmansville soils formed in alluvial deposits derived from upland soil materials weathered from dolerite or basalt and have sola thicknesses that extend to 59 inches.
GEOGRAPHIC SETTING: Orrville soils formed in alluvium and are on flood plain steps on flood plains. They formed in alluvium from upland areas of low-lime drift, and from areas of sandstone, siltstone, shale, and limestone. They are in or bordering areas of Wisconsinan or Illinoian glaciation. Slope ranges from 0 to 3 percent. Mean annual precipitation ranges from 29 to 45 inches, and mean annual temperature ranges from 39 to 57 degrees F. The frost free period ranges from 110 to 200 days, and elevation ranges from 340 to 1,360 feet above msl.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Chagrin, Chili, Fitchville, Holly, Lobdell, Sebring, Washtenaw, and Wheeling soils. Chagrin, Holly, and Lobdell soils are in a drainage sequence with Orrville soils. The well drained Chagrin soils are on high positions on the landscape, the very poorly drained Holly soils are in depressions and abandoned stream channels, and the moderately well drained Lobdell soils are on slightly higher landscape positions than Orrville soils. Chili, Fitchville, Sebring, and Wheeling soils are on terraces on nearby landscapes and have argillic horizons; in addition, Chili and Wheeling soils formed in stratified outwash materials, and Fitchville and Sebring soils formed in lacustrine sediments. The poorly drained Washtenaw soils are in depressions or swales on the flood plain.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. The potential for surface runoff is low. Permeability is moderate in the upper solum and moderate or moderately rapid in the lower solum and underlying material. The depth to the top of an intermittent apparent seasonal high water table ranges from 0.5 to 1.0 foot from November to May in normal years. Orrville soils are subject to occasional or frequent flooding.
USE AND VEGETATION: Use is dependent on frequency of flooding and the accessibility. Areas in wider valleys are cropped to corn, soybeans, and hay. Narrow areas and those dissected by old stream channels are in woodland and permanent pasture. The original vegetation was deciduous forest.
DISTRIBUTION AND EXTENT: Southern Indiana, Kentucky, eastern Ohio, Pennsylvania, Virginia, and West Virginia. MLRA's 114, 124, 125, 126, 128, 139, and 140. The series is of large extent, about 196,000 acres.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Amherst, Massachusetts.
SERIES ESTABLISHED: Fairfield County, Ohio, 1956.
REMARKS: A bedrock substratum phase with sandstone at 60 to 80 inches is currently recognized. Earlier surveys correlated a bedrock substratum phase with sandstone or siltstone at a depth of 40 to 60 inches. This phase will need to be evaluated during MLRA update activities.
Diagnostic horizons and features recognized in this pedon are:
a) Ochric epipedon - from a depth of 0 to 9 inches (Ap horizon).
b) Cambic horizon - from a depth of 9 to 41 inches (Bw, Bg1 and Bg2 horizons).
c) Aquic conditions - from a depth of 0 to 60 inches.
d) Udic moisture regime.
This revision reflects a change in taxonomic classification from Fluvaquentic Endoaquepts to Fluventic Endoaquepts due to updates contained in the 9th Edition of Keys to Soil Taxonomy. Competing series may change as similar soils are reclassified.
Acreage based on 2004 data.
08/2005-The competing series were compared by the 9th Edition of Keys to Soils Taxonomy following revision of taxonomic class of the series.