USDA SSURGO COUNTY SOIL REFERENCE

Pulaski County, Arkansas Soil Summary

This page summarizes USDA SSURGO mapped soil information for Pulaski County, Arkansas.

Mapped Land Coverage
100%516,734.22 mapped acres of 516,734.2 Census land acres

Coverage measures mapped SSURGO intersection with Census land geometry. It does not mean that every parcel or point has complete soil information.

Soil at a Glance

Largest mapped soil unit
Clarksville-Gepp complex, 15 to 35 percent slopes, stony
Symbol: 734003.09% of mapped area
Largest estimated component
Frederick
17,718.4 acres (3.43% of mapped area)
Mapped units & components
15 soil units • 15 component series
Distinct SSURGO map units & series
Dominant drainage class
Well drained
Highest acreage drainage class
Dominant hydrologic group
Group B
Runoff potential classification
Weighted average slope
10.64%
Terrain slope analysis
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Mapped SSURGO Soil Units

Largest mapped soil units in Pulaski County ranked by intersected vector acreage
SymbolMap Unit NameMapped Acres% of Mapped Area
73400Clarksville-Gepp complex, 15 to 35 percent slopes, stony15,946.613.09%
CMFCarnasaw-Mountainburg association, steep14,360.352.78%
TfBTifton loamy sand, 2 to 5 percent slopes12,746.082.47%
MhaAMaumee loamy fine sand, 0 to 1 percent slopes12,625.012.44%
DoBDothan loamy sand, 2 to 5 percent slopes9,821.321.9%
73016Viraton silt loam, 3 to 8 percent slopes8,648.951.67%
BOOsier and Bibb soils, 0 to 2 percent slopes, frequently flooded7,933.511.54%
FdCFrederick silt loam, 6 to 12 percent slopes7,601.461.47%
PePerry clay, 0 to 1 percent slopes, rarely flooded7,385.331.43%
73136Union silt loam, 1 to 3 percent slopes7,069.641.37%
LRELinker-Mountainburg association, 12 to 25 percent slopes, rocky6,544.781.27%
CwBCowarts-Nankin-Ailey complex, 2 to 5 percent slopes6,544.561.27%
FuBFuquay loamy sand, 0 to 5 percent slopes6,332.681.23%
PeAPelham loamy sand, 0 to 2 percent slopes6,247.481.21%
WWater6,111.171.18%

Estimated Soil Components

Component acreage estimated from SSURGO component percentages
ComponentDrainage ClassHydrologic GroupEstimated Acres% of Mapped Area
FrederickWell drainedB17,718.43.43%
ClarksvilleSomewhat excessively drained, Excessively drainedA, C, D, B16,587.963.21%
CarnasawWell drainedC15,950.883.09%
TiftonWell drainedB13,658.482.64%
MaumeeVery poorly drained, Poorly drainedA/D13,308.862.58%
WaterSubaqueousD12,534.152.43%
LeadvaleModerately well drained, Poorly drainedC/D, D11,532.742.23%
Urban landUnspecifiedD11,444.532.21%
PoynorWell drainedB, D10,918.772.11%
MountainburgWell drainedD9,343.731.81%
DothanWell drainedB9,256.991.79%
PelhamPoorly drainedB/D8,715.491.69%
UnionModerately well drainedC, D8,610.761.67%
LinkerWell drainedC8,147.551.58%
ViratonModerately well drainedD7,440.861.44%
Component acreage is estimated from SSURGO map-unit component percentages. Component values are not independently mapped polygon boundaries.

Drainage Class Distribution

Well drained48.55%
250,888.26 acres
Poorly drained15.8%
81,657.76 acres
Moderately well drained13%
67,183.56 acres
Unknown / Unmapped6.86%
35,439.53 acres
Somewhat poorly drained5.76%
29,748.29 acres
Somewhat excessively drained4.15%
21,455.68 acres
Excessively drained1.68%
8,683.48 acres
Very poorly drained0.71%
3,654.46 acres
Subaqueous0.16%
827.99 acres

Hydrologic Soil Group Distribution

Group B28.82%
148,924.57 acres
Group C18.84%
97,376.69 acres
Group D16.9%
87,313.09 acres
Group C/D8.6%
44,423.46 acres
Group A/D7.21%
37,265.64 acres
Group A7.02%
36,255.1 acres
Group Unknown / Unmapped4.93%
25,477 acres
Group B/D4.35%
22,503.46 acres

Hydrologic soil groups are USDA/NRCS classifications related to runoff potential under specified soil conditions. They are not a property-level flood-risk rating.

Slope Characteristics

Weighted Average Slope: 10.64%
Nearly Level (0-2%)32.72%
169,085.21 acres
Gently Sloping (2-8%)23.91%
123,569.2 acres
Moderately Sloping (8-15%)9.63%
49,763.04 acres
Steep (15-30%)17.37%
89,739.88 acres
Very Steep (>30%)7.3%
37,700.75 acres
Unspecified Slope5.74%
29,680.93 acres

Sources & Methodology

USDA NRCS SSURGO

Mapped soil units, components, drainage classes, hydrologic groups, and slope ratings derived from official Soil Data Access REST services.

U.S. Census Bureau TIGER/Line

County land geometry used for county-level coverage calculation.

Coverage Method

Mapped acreage is calculated from true spatial vector intersection of county land geometry and SSURGO mapped soil polygons using NAD83 / CONUS Albers Equal Area projection (EPSG:5070).