Soil Survey of Dallas County, Texas Page: 38
vii, 153 p., 70 fold. p. of plates : ill., maps ; 29 cm.View a full description of this book.
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SOIL SURVEY
and low strength of the soil are limitations to urban
development, but they can be overcome through good
design and careful installation. Wetness also is a limita-
tion to urban uses, and it is more difficult to overcome.
The very slow permeability and wetness of this soil are
the main limitations to recreation uses.
This soil is in capability subclass Ille and in the Clay-
pan Prairie range site.
80-Wilson-Urban land complex, 0 to 2 percent
slopes. This complex is made up of nearly level to
gently sloping, deep, somewhat poorly drained soils and
areas of Urban land. The areas are oblong and range
from 15 to as much as a few hundred acres.
The Wilson soil makes up about 60 percent of this
complex, and Urban land, which consists of areas cov-
ered with buildings and pavement, makes up 30 percent.
Minor soils make up the rest. In the more recent residen-
tial developments, the upper layers of the soil have been
disturbed extensively by building and street construction.
in the older developments, the soil has been disturbed
only by street shaping and by excavating for service
lines. In some yards, a layer of loamy topsoil 2 to 4
inches thick has been spread over the surface. The
Wilson soil and Urban land are so intermingled that it
was not practical to separate them in mapping at the
scale used.
Typically, the surface layer of the Wilson soil is mildly
alkaline, dark grayish brown clay loam 5 inches thick. To
a depth of 42 inches, the soil is neutral, dark gray clay.
To a depth of 56 inches, it is mottled, very dark gray and
olive brown, neutral clay. Below that, to a depth of 64
inches, the soil is moderately alkaline, light olive brown
clay.
Permeability is very slow, and the available water ca-
pacity is high. Runoff is slow, and the hazard of erosion
is slight.
Included in mapping are small areas of Burleson,
Crockett, Houston Black, and Mabank soils. The includ-
ed soils make up less than 10 percent of any one
mapped area.
The Wilson soil has medium potential for urban uses.
The high shrink-swell potential, corrosivity, and low
strength of the soil are the main limitations to urban
uses, but they can be overcome through good design
and careful installation. Wetness also is a limitation to
urban uses, and it is more difficult to overcome. The
wetness and very slow permeability of the soil are the
main limitations to recreation uses.
This map unit was not assigned to a capability sub-
class or a range site.
Use and management of the soils
This soil survey is an inventory and evaluation of the
soils in the survey area. It can be used to adjust land
uses to the limitations and potentials of natural re-sources and the environment. Also, it can help avoid
soil-related failures in land uses.
In preparing a soil survey, soil scientists, conservation-
ists, engineers, and others collect extensive field data
about the nature and behavior characteristics of the
soils. They collect data on erosion, droughtiness, flood-
ing, and other factors that affect various soil uses and
management. Field experience and collected data on
soil properties and performance are used as a basis in
predicting soil behavior.
Information in this section can be used to plan the use
and management of soils for crops and pasture and for
rangeland; as sites for buildings, sanitary facilities, high-
ways and other transportation systems, and parks and
other recreation facilities; and for wildlife habitat. It can
be used to identify the potentials and limitations of each
soil for specific land uses and to help prevent construc-
tion failures caused by unfavorable soil properties.
Planners and others using soil survey information can
evaluate the effect of specific land uses on productivity
and on the environment in all or part of the survey area.
The survey can help planners to maintain or create a
land use pattern in harmony with the natural soil.
Contractors can use this survey to locate sources of
sand and gravel, roadfill, and topsoil. They can use it to
identify areas where bedrock, wetness, or very firm soil
layers can cause difficulty in excavation.
Health officials, highway officials, engineers, and
others may also find this survey useful. The survey can
help them plan the safe disposal of wastes and locate
sites for pavements, sidewalks, campgrounds, play-
grounds, lawns, and trees and shrubs.
Crops and pasture
General management needed for crops and pasture is
suggested in this section. The crops or pasture plants
best suited to the soils, including some not commonly
grown in the survey area, are identified; the system of
land capability classification used by the Soil Conserva-
tion Service is explained; and the estimated yields of the
main crops and hay and pasture plants are listed for
each soil.
Planners of management systems for individual fields
or farms should consider the detailed information given
in the description of each soil under "Soil maps for
detailed planning." Specific information can be obtained
from the local office of the Soil Conservation Service or
the Cooperative Extension Service.
More than 234,000 acres in the survey area was used
for crops and pasture in 1967, according to the Conser-
vation Needs Inventory (3). Of this total 96,273 acres
was used as permanent pasture; 55,327 acres for row
crops, mainly cotton and grain sorghum; 36,208 acres for
close-growing crops, mainly wheat and oats; 40,000
acres as hayland and for rotation hay and pasture; and
16,242 acres for conservation use. The rest was idle
cropland.38
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General Soil Map, Dallas County, Texas (Map)
Map displays soil types along with creeks, towns, schools, churches, power transmission lines, oil and gas pipelines, roads, and railroads. Includes legend and symbols. Scale 1:253,400
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Coffee, Daniel R. Soil Survey of Dallas County, Texas, book, 1980; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth130211/m1/48/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.