LOCATION MEDWAY OH+IL IN MO

Established Series
Rev. DDL-RMG
11/2021

MEDWAY SERIES

The Medway series consists of very deep, moderately well drained soils formed in loamy alluvium. These soils are on flood plains. Slope ranges from 0 to 3 percent. Mean annual precipitation is about 914 mm (36 inches), and mean annual air temperature is about 11 degrees C (51 degrees F).

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Fluvaquentic Hapludolls

TYPICAL PEDON: Medway silt loam, on a nearly level area in a cultivated field at an elevation of 244 meters (800 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 18 cm (0 to 7 inches); very dark brown (10YR 2/2) silt loam, dark grayish brown (10YR 4/2) dry; weak fine and medium granular structure; friable; many roots; faint black (10YR 2/1) organic coatings on faces of peds; 1 percent rock fragments; neutral; abrupt smooth boundary.

A--18 to 33 cm (7 to 13 inches); black (10YR 2/1) silt loam, dark gray (10YR 4/1) dry; moderate fine and medium subangular blocky structure; friable; common roots; 1 percent rock fragments; neutral; clear wavy boundary. [Combined thickness of the A horizon is 25 to 61 cm (10 to 24 inches).]

AB--33 to 46 cm (13 to 18 inches); very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; weak medium subangular blocky structure; friable; few roots; common faint black (10YR 2/1) organic coatings on vertical faces of peds; 1 percent rock fragments; neutral; clear wavy boundary.

Bw1--46 to 61 cm (18 to 24 inches); brown (10YR 4/3) loam; weak medium and coarse subangular blocky structure; friable; few roots; common faint very dark grayish brown (10YR 3/2) organic coatings on vertical faces of peds; common medium faint grayish brown (10YR 5/2) iron depletions in the matrix; few medium distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; few fine and medium faint very dark brown (10YR 2/2) masses of manganese accumulation in the matrix; 2 percent rock fragments; neutral; clear wavy boundary.

Bw2--61 to 79 cm (24 to 31 inches); brown (10YR 5/3) loam; weak medium subangular blocky structure; friable; few roots; common distinct dark grayish brown (10YR 4/2) organic coatings in old root channels; many fine and medium faint grayish brown (10YR 5/2) iron depletions in the matrix; common medium distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; few fine faint very dark brown (10YR 2/2) masses of manganese accumulation in the matrix; 2 percent rock fragments; slightly acid; clear wavy boundary.

Bw3--79 to 96 cm (31 to 38 inches); yellowish brown (10YR 5/4) loam; weak coarse subangular blocky structure; friable; few roots; common distinct dark grayish brown (10YR 4/2) coatings in old root channels; common medium distinct gray (10YR 6/1) and grayish brown (10YR 5/2) iron depletions in the matrix; few medium distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; 4 percent rock fragments; neutral; clear wavy boundary. [Combined thickness of the Bw horizon is 20 to 102 cm (8 to 40 inches).]

C1--96 to 107 cm (38 to 42 inches); brown (10YR 4/3) sandy loam; massive; friable; few fine faint dark yellowish brown (10YR 4/4) masses of iron accumulation in the matrix; 14 percent rock fragments; slightly effervescent; slightly alkaline; clear smooth boundary.

C2--107 to 127 cm (42 to 50 inches); yellowish brown (10YR 5/6) gravelly clay loam; massive; friable; few fine distinct dark yellowish brown (10YR 4/4) masses of iron accumulation in the matrix; 15 percent rock fragments; slightly effervescent; slightly alkaline; clear smooth boundary.

C3--127 to 152 cm (50 to 60 inches); grayish brown (10YR 5/2) gravelly loam; massive; friable; common medium prominent yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; 25 percent rock fragments; strongly effervescent; moderately alkaline.

TYPE LOCATION: Pickaway County, Ohio; about 7 miles southeast of Circleville, in Pickaway Township; 2885 feet south and 50 feet west of the northeast corner of sec. 12, T. 10 N., R. 21 W.; USGS Stoutsville, Ohio topographic quadrangle; lat. 39 degrees 32 minutes and 21 seconds N. and long. 82 degrees 50 minutes and 44 seconds W., NAD 27.

RANGE IN CHARACTERISTICS:
Thickness of the mollic epipedon: 25 to 61 cm (10 to 24 inches)
Depth to the base of the cambic horizon: 71 to 152 cm (28 to 60 inches)
Depth to carbonates: 76 to more than 203 cm (30 to more than 80 inches)
Particle-size control section: averages 18 to 32 percent clay and 15 to 70 percent sand coarser than very fine sand
Rock fragments: limestone, dolostone, and crystalline lithology

Ap, A, or AB horizon:
Hue: 10YR
Value: 2 or 3 (4 or 5 dry); in some pedons, thin upper layers of recent deposition have moist color value of 4
Chroma: 1 to 3
Texture: silt loam, loam, clay loam, or silty clay loam
Rock fragment content: 0 to 14 percent
Reaction: slightly acid to slightly alkaline

Some pedons have a BA horizon.

Bw or Bg horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 3 to 5
Chroma: 2 to 4 in the upper part and 1 to 4 in the lower part
Texture: loam or silt loam, or less commonly has individual horizons of clay loam, silty clay loam, sandy loam, fine sandy loam, or sandy clay loam; the lower part typically is stratified
Rock fragment content: 0 to 14 percent
Reaction: slightly acid to slightly alkaline but may be moderately alkaline in the lower part

Some pedons have a BC horizon.

C or Cg horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 4 or 5
Chroma: 1 to 6
Texture: stratified loam, silt loam, sandy loam, silty clay loam, or clay loam or the gravelly analogs of these textures
Rock fragment content: 0 to 34 percent

Some pedons have sand and gravel below 102 cm (40 inches). Reaction ranges from slightly acid to moderately alkaline.

Bedrock substratum phase:
Depth to limestone bedrock: 152 to 305 cm (60 to 120 inches)

COMPETING SERIES: These are the Harrod and Shaffton series. Harrod soils have a lithic contact within a depth of 102 cm (40 inches). Shaffton soils are more acid than slightly acid in the cambic horizon.

GEOGRAPHIC SETTING: The Medway soils are on flood plains of both major and minor streams. Slope ranges from 0 to 3 percent. The soils formed in loamy alluvium washed from soils formed in drift of Wisconsinan age. Mean annual precipitation ranges from 686 to 1067 mm (27 to 42 inches). Mean annual air temperature ranges from 7 to 13 degrees C (45 to 55 degrees F). Frost-free period is 140 to 180 days. Elevation ranges from 600 to 1100 feet.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Eel, Genesee, Ross, Rossburg, Shoals, and Sloan soils. The moderately well drained Eel, well drained Genesee, and somewhat poorly drained Shoals soils are members of a toposequence that do not have a mollic epipedon. Eel soils are on similar landscape positions. The well drained Ross and Rossburg soils commonly are on higher landscape positions or are nearer to stream channels. The somewhat poorly drained Shoals and the very poorly drained Sloan soils typically are on lower landscape positions or are farther from stream channels.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained. The depth to the top of an intermittent apparent high water table ranges from 30 to 61 cm (1 to 2 feet) between December and April in normal years. The potential for surface runoff is negligible to low. Saturated hydraulic conductivity is moderately high in the solum and high in the substratum. Permeability is moderate in the solum and moderate or moderately rapid in the substratum. Unless protected, Medway soils are subject to flooding.

USE AND VEGETATION: Most areas are under cultivation. Corn and soybeans are the principal crops. Some areas are in permanent pasture or woodland. Sycamore, ash, elm, oak, beech, maple, and walnut are the principal woodland tree species. Native vegetation is scattered deciduous forest with prairie grasses.

DISTRIBUTION AND EXTENT: MLRAs 99, 111A, 111B, 111E, and 121 in western and central Ohio; MLRAs 111A in central Indiana and MLRA 115A in southwest Indiana; MLRAs 108A, 108B, 113, 114B, 115B, and 115C in central and western Illinois; and MLRA 115B in Missouri. The type location is in MLRA 111A. The series is of moderate extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: AMHERST, MASSACHUSETTS

SERIES ESTABLISHED: Clinton County, Ohio, 1959.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: from the surface to a depth of 46 cm (Ap, A, AB horizons).
Cambic horizon: from a depth of 46 to 96 cm (18 to 38 inches) (Bw horizon).
Aquic conditions: redox features visible in all horizons below a depth of 46 cm.

A bedrock substratum phase is recognized.

National Cooperative Soil Survey
U.S.A.