LOCATION GOTHENBURG NEEstablished Series
TAXONOMIC CLASS: Mixed, mesic Typic Psammaquents
TYPICAL PEDON: Gothenburg loamy sand with a slope of 0 to 2 percent. When described, the soil was moist throughout. (Colors are for dry soil unless otherwise stated.)
A--0 to 3 inches; grayish brown (10YR 5/2) loamy sand, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, very friable; many fine and medium roots; neutral; clear wavy boundary. (1 to 6 inches thick)
C--3 to 8 inches; light brownish gray (10YR 6/2) coarse sand, grayish brown (10YR 5/2) moist; single grain; loose; 3 percent gravel by volume; neutral; abrupt wavy boundary. (0 to 14 inches thick)
2Cg--8 to 80 inches; light gray (10YR 7/2) gravelly coarse sand, pale brown (10YR 6/3) moist; common, medium prominent strong brown (7.5YR 5/6) moist; iron masses in the soil matrix; single grain; loose; 30 percent gravel by volume; neutral.
TYPE LOCATION: Kearney County, Nebraska; 10 miles north and 9 miles west of Minden; 1000 feet north and 2300 feet east of the southwest corner, sec. 16, T. 8 N., R. 16 W. Alfalfa Center topographic quadrangle; lat. 40 degrees, 39 minutes , 30 seconds North and long. 99 degrees, 7 minutes 51 seconds West.
RANGE IN CHARACTERISTICS:
Soil Moisture: Soil is generally saturated to or near the surface during most of the growing season. aquic moisture regime
Depth to secondary calcium carbonate: calcium carbonates are generally found in the upper part of most soil profiles
Depth to redoximorphic features: Concentrations: distinct or prominent brown or yellowish brown iron masses are in the matrix of the C horizons in most places
Depth to endosaturation: 0 to 1.5 feet, It is highest in early spring and winter when stream flow is highest. During mid-summer, it may recede to a depth of several feet
Thickness of the mollic epipedon: 1 to 6 inches
Depth to rock fragments: less than 10 inches but ranges from 1 to 20 inches
A horizon:
Hue: 10YR
Value: 3 to 5 dry, 2 or 3 moist
Chroma: 1 or 2
Texture: loam, fine sandy loam, sandy loam, loamy fine sand, loamy sand, fine sand or sand, thin layers of clay loam are in some pedons
Clay content: 2 to 8 percent
Rock fragments: rounded gravel, 2-75mm. in size; 0 to 5 percent by volume
Reaction: neutral to moderately alkaline
C horizon:
Hue: 10YR or 2.5Y
Value: 6 to 8 dry, 4 to 7 moist
Chroma: 1 to 3
Texture: Fine sand, sand, or coarse sand, in some pedons, the upper part of the C horizon is loam, fine sandy loam, loamy fine sand or loamy sand
Rock fragments: rounded gravel, 2-75mm. in size; 0 to 15 gravel by volume
Reaction: neutral to moderately alkaline
C2g horizon:
Hue: 10YR
Value: 6 to 8 dry, 4 to 7 moist
Chroma: 1 through 3
Texture: sand, gravelly coarse sand or coarse sand
Rock fragments: rounded gravel, 2-75mm. in size; 0 to 25 gravel by volume; some pedons contain thin strata of material that ranges up to 50 percent gravel by volume
Reaction: neutral or slightly alkaline
COMPETING SERIES:
Arloval: have less rainfall and typically fewer coarse fragments
Barren: have more rainfall
Carrolls: have volcanic ash in the particle size control section
Conrad: have fewer coarse fragments, typically contain finer sand, dominantly have chroma of 1 in the control section, and typically are more stratified
Dair: have cambic horizons
Forbar: contain less than 15 percent gravel in the series control section and formed in sediments derived from volcanic ash and tuff
Jamaica: have more rainfall
Junius: contain fewer coarse fragments and do not flood.
Stafford soils are mainly fine sand and typically lack coarse fragments
Norway: are calcareous throughout
Stafford: are mainly fine sand and typically lack coarse fragments
Tryon: soils lack coarse fragments
Tyre: have sandstone bedrock within depths of 40 inches or less
Wanser: have less rainfall and typically fewer coarse fragments
GEOGRAPHIC SETTING:
Parent material: derived from recent alluvium that overlies gravelly sand
Landform: flood plains, areas are commonly dissected by shallow stream channels
Slopes: 0 to 2 percent
Elevation: 1500 to 4000 feet
Mean annual soil temperature: 52 to 55 degrees F
Mean annual temperature: 50 to 53 degrees F
Mean annual precipitation: 14 to 30 inches
Frost-free period: 130 to 160 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Alda: are deeper to the gravelly sand, are higher on the landscape and flood less frequently
Barney: are on similar landscapes
Cass: are deeper and have a seasonal high water table at depths below 6 feet, are higher on the landscape and flood less frequently
Gibbon: are deeper and have finer textured particle size control sections, are higher on the landscape and flood less frequently
Las: are deeper and have finer textured particle size control sections, are higher on the landscape and flood less frequently
Lawet: are deeper and have finer textured particle size control sections, are higher on the landscape and flood less frequently
Leshara: are deeper and have finer textured particle size control sections, are higher on the landscape and flood less frequently
Lex: are deeper to the gravelly sand, are higher on the landscape and flood less frequently
Lexsworth: are deeper to the gravelly sand, are higher on the landscape
Platte: are 10 to 20 inches to gravelly sand, gravelly coarse sand or coarse sand
Wann: are deeper and have finer textured particle size control sections, are higher on the landscape and flood less frequently
DRAINAGE AND PERMEABILITY:
Drainage: poorly drained
Permeability: rapid to very rapid
Flooding: frequent or occasional
Runoff: slow
USE AND VEGETATION: Range and habitat for wildlife. Vegetation is mainly switchgrass, mixed with cottonwood and cedar trees on the higher areas, and prairie cordgrass, sedges, annual grasses, and willow trees on the lower areas. Annual grasses, weeds, sedges, and shrubs are common.
DISTRIBUTION AND EXTENT: In Nebraska along the Platte River. The series is of large extent.
MLRA OFFICE RESPONSIBLE: Salina, Kansas
SERIES ESTABLISHED: Dawson County, Nebraska, 1975.
REMARKS: Before extensive flooding of the Platte River was controlled by upstream dams, this soil was unstable riverwash. Since 1940, these areas have become stabilized and vegetated with trees and grasses. In older surveys, these soils were called Loamy alluvial land, Gravelly alluvial land, or Mixed alluvial land.
OSD Modification 6/2002RRZ Slope range drop from 3 to 2 percent.