LOCATION HAWLEY                  OK

Established Series
Rev. CRC:JLD
07/2018

HAWLEY SERIES

The Hawley series consist of very deep, well drained, moderately permeable soils. They formed in material weathered from loamy alluvium of Pleistocene age. These nearly level to very gently sloping soils are on high flood plains subject to rare flooding, in the Central Rolling Red Prairies (MLRA 80A). Slope ranges from 0 to 3 percent. Mean annual precipitation is 838 mm (33 in), and mean annual temperature is 17 degrees C (63 degrees F)

TAXONOMIC CLASS: Coarse-loamy, mixed, active, thermic Fluventic Haplustepts

TYPICAL PEDON: Hawley fine sandy loam, on a 0 to 3 percent slope in native grasses at an elevation of 334 m (1095 ft). (Colors are for dry soil unless otherwise stated.)

Ap--0 to 23 cm (0 to 9 in); brown (7.5YR 5/4) fine sandy loam, dark brown (7.5YR 3/4) moist; weak fine granular structure; soft, very friable; moderately acid; clear smooth boundary.

A--23 to 46 cm (9 to 18 in); brown (7.5YR 4/4) fine sandy loam, dark brown (7.5YR 3/4) moist; weak coarse prismatic structure breaking to weak fine granular; slightly hard, friable; neutral; gradual smooth boundary. (Combined thickness of the A horizon is 18 to 75 cm [7 to 29 in])

Bw--46 to 86 cm (18 to 34 in); brown (7.5YR 5/4) fine sandy loam, brown (7.5YR 4/4) moist; weak coarse prismatic structure; soft, very friable; slightly alkaline; gradual smooth boundary. (Thickness of the Bw horizon is 18 to 102 cm [7 to 40 in])

C1--86 to 127 cm (34 to 50 in); brown (7.5YR 5/4) fine sandy loam, brown (7.5YR 4/4) moist; massive; soft, very friable; strata 6 to 10 cm (0.25 inch to 4 in) thick of loamy fine sand and very fine sandy loam; moderately alkaline; gradual smooth boundary. (Thickness of the C1 horizon is 28 to 81 cm [11 to 32 in])

C2--127 to 168 cm (50 to 66 in); brown (7.5YR 4/4) loam, dark brown (7.5YR 3/2) moist; massive; slightly hard, friable; strata 6 to 10 cm (0.25 in to 4 in) thick of very fine sandy loam, silt loam, and silty clay loam, few soft powdery masses and threads of calcium carbonate; calcareous; moderately alkaline.

TYPE LOCATION: Grant County, Oklahoma; 6 miles north and 3 miles east of Nash; 1,900 feet west and 140 feet south of the northeast corner of sec. 7, T. 26 N., R. 7 W.

USGS Topographic Quadrangle: Wakita SW, OK
Latitude: 36 degrees, 45 minutes, 9.35 minutes N
Longitude: 97 degrees, 59 minutes, 25.53 seconds W

Decimal Degrees:
Latitude: 36.75260
Longitude: -97.99042
Datum: NAD83

UTM Easting: 590120 m
UTM Northing: 4067902 m
UTM Zone 14N

RANGE IN CHARACTERISTICS:
Solum thickness: more than 152 cm (60 in)
Depth to calcium carbonate: 25 to 152 cm (10 to 60 in)
Organic matter content (A horizon): less than 1 percent
Buried horizons: in some horizons below a depth of 64 cm (25 in)

Ap horizon:
Hue: 7.5YR or 10YR
Value: 4 to 6, 3 to 6 moist
Chroma: 3 to 6 dry and moist
Texture: loamy fine sand, fine sandy loam, or loam
Effervescence: none to slight
Reaction: moderately acid to slightly alkaline

A horizon:
Hue: 7.5YR or 10YR
Value: 3 to 5 dry and moist
Chroma: 3 to 6 dry and moist
Texture: fine sandy loam or loam
Effervescence: none to slight
Reaction: slightly acid to slightly alkaline

Bw horizon:
Hue: 5YR or 7.5YR
Value: 4 to 6, 3 to 5 moist
Chroma: 3 to 6 dry and moist
Texture: fine sandy loam or loam
Effervescence: none to strong
Other features: in some pedons, this horizon is calcareous
Reaction: slightly acid to moderately alkaline

C horizon:
Hue: 5YR or 7.5YR
Value: 4 to 7, 3 to 6 moist
Chroma: 3 to 6 dry and moist
Texture: fine sandy loam, loam, or in some pedons below a depth of 91 cm (36 in), it is loamy fine sand with thin strata of silt loam, silty clay loam, sandy clay loam, loamy very fine sand, or fine sand
Effervescence: none to strong
Reaction: neutral to moderately alkaline

Ab horizon below a depth of 63.5 cm (25 in) (where present):
Hue: 7.5YR or 10YR,
Value: 3 to 5, 3 or 4 moist
Chroma: 2 to 4 dry or moist
Other features: horizons with contrasting textures below a depth of 91 cm (36 in)

COMPETING SERIES: These are the Guadalupe series of the same family and the Dalupe, Pocasset, and Weswood series of similar families.
Dalupe soils: have mesic temperatures
Guadalupe soils: are dryer for longer periods of time
Pocasset soils: have a mollic epipedon
Weswood soils: have a fine-silty particle-size control section

GEOGRAPHIC SETTING:
Parent material: material weathered from loamy alluvium and sandy eolian sediments
Landscape: alluvial plain
Landform: flood plains
Slope: 0 to 3 percent
Mean annual temperature: 14 to 17 degrees C (58 to 63 degrees F)
Mean annual precipitation: 762 to 1020 mm (30 to 40 in)
Frost-free days: 190 to 230 days
Elevation: 229 to 396 m (750 to 1300 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the similar Pocasset series and Canadian, Crisfield, Dale, Gaddy, Lela, McLain, Miller, Port, Reinach, and Yahola series.
Canadian, Crisfield, Dale, Lela, McLain, and Reinach soils: are on flood plains at similar elevations
Canadian, Crisfield, Dale, Lela, McLain, Miller, Port, and Reinach soils: have a mollic epipedon
Gaddy, Miller, Pocasset, Port, and Yahola soils: are on flood plains at lower elevations
Gaddy and Yahola soils: do not have a cambic horizon and are calcareous within a depth of 25 cm (10 in) from the surface; in addition, Gaddy soils have a sandy control section.

DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderate
Runoff: negligible on 0 to 1 percent slopes, and low on 1 to 3 percent slopes
Flooding: subject to rare flooding April through November

USE AND VEGETATION: Most areas are cropped to wheat, other small grains, grain sorghums and alfalfa. Native vegetation consists of tall and mid grass prairie with minor amounts of American elm, willow, pecan, bur oak, eastern cottonwood, and green ash trees.

DISTRIBUTION AND EXTENT:
General area: north central Oklahoma
Land Resource Region: H-Central Great Plains Winter Wheat and Range Region
MLRA 80A-Central Rolling Red Prairies
Extent: moderate

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Grant County, Oklahoma; 1983.

REMARKS: This series was formerly a part of the Canadian series.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 46 cm (0 to 18 in) (Ap, A horizons)
Cambic horizon: 46 to 86 cm (18 to 34 in) (Bw horizon)
Fluventic feature: stratification in the 25 to 100 cm (10 to 40 in) control section

ADDITIONAL DATA: none

TAXONOMIC VERSION: Keys to Soil Taxonomy, Twelfth Edition, 2014

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National Cooperative Soil Survey
U.S.A.