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

Carnasaw-Mountainburg association, steep

Symbol: CMF • 12.4% of mapped area

Largest estimated component

Carnasaw

71,182.35 acres (13.78% of mapped area)

Mapped units & components

116 mapped soil units

Top 15 shown below · 70 component series

Dominant drainage class

Well drained

Highest acreage drainage class

Dominant hydrologic group

Group D

Runoff potential classification

Weighted average slope

6.93%

Terrain slope analysis

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Top Mapped Soil Units

Showing the 15 largest mapped units, representing 67.36% of mapped soil area.

Symbol	Map Unit Name	Mapped Acres	% of Mapped Area
CMF	Carnasaw-Mountainburg association, steep	64,055.43	12.4%
Pe	Perry clay, 0 to 1 percent slopes, rarely flooded	33,527.17	6.49%
LRE	Linker-Mountainburg association, 12 to 25 percent slopes, rocky	29,186.4	5.65%
W	Water	28,118.75	5.44%
CMC	Carnasaw-Mountainburg association, undulating	26,441.25	5.12%
LeB	Leadvale silt loam, 1 to 3 percent slopes	23,805.91	4.61%
LkC	Linker gravelly fine sandy loam, 3 to 8 percent slopes	19,978.7	3.87%
No	Norwood silty clay loam	19,183.88	3.71%
Ko	Keo silt loam, 0 to 1 percent slopes, rarely flooded	19,136.72	3.7%
RmA	Rilla silt loam, 0 to 1 percent slopes	16,515.69	3.2%
GeB	Guthrie-Leadvale complex, 0 to 3 percent slopes	15,878.48	3.07%
LeC	Leadvale silt loam, 3 to 8 percent slopes	14,372.65	2.78%
Ut	Urban land	13,905.48	2.69%
Ao	Amy silt loam, 0 to 1 percent slopes, frequently flooded	12,031.15	2.33%
CbC	Carnasaw-Urban land complex, 3 to 8 percent slopes	11,899.01	2.3%

CMF12.4% of mapped area

Carnasaw-Mountainburg association, steep

Mapped Area64,055.43 acres

Rank#1 of 116 in county

Pe6.49% of mapped area

Perry clay, 0 to 1 percent slopes, rarely flooded

Mapped Area33,527.17 acres

Rank#2 of 116 in county

LRE5.65% of mapped area

Linker-Mountainburg association, 12 to 25 percent slopes, rocky

Mapped Area29,186.4 acres

Rank#3 of 116 in county

W5.44% of mapped area

Water

Mapped Area28,118.75 acres

Rank#4 of 116 in county

CMC5.12% of mapped area

Carnasaw-Mountainburg association, undulating

Mapped Area26,441.25 acres

Rank#5 of 116 in county

LeB4.61% of mapped area

Leadvale silt loam, 1 to 3 percent slopes

Mapped Area23,805.91 acres

Rank#6 of 116 in county

LkC3.87% of mapped area

Linker gravelly fine sandy loam, 3 to 8 percent slopes

Mapped Area19,978.7 acres

Rank#7 of 116 in county

No3.71% of mapped area

Norwood silty clay loam

Mapped Area19,183.88 acres

Rank#8 of 116 in county

Ko3.7% of mapped area

Keo silt loam, 0 to 1 percent slopes, rarely flooded

Mapped Area19,136.72 acres

Rank#9 of 116 in county

RmA3.2% of mapped area

Rilla silt loam, 0 to 1 percent slopes

Mapped Area16,515.69 acres

Rank#10 of 116 in county

GeB3.07% of mapped area

Guthrie-Leadvale complex, 0 to 3 percent slopes

Mapped Area15,878.48 acres

Rank#11 of 116 in county

LeC2.78% of mapped area

Leadvale silt loam, 3 to 8 percent slopes

Mapped Area14,372.65 acres

Rank#12 of 116 in county

Ut2.69% of mapped area

Urban land

Mapped Area13,905.48 acres

Rank#13 of 116 in county

Ao2.33% of mapped area

Amy silt loam, 0 to 1 percent slopes, frequently flooded

Mapped Area12,031.15 acres

Rank#14 of 116 in county

CbC2.3% of mapped area

Carnasaw-Urban land complex, 3 to 8 percent slopes

Mapped Area11,899.01 acres

Rank#15 of 116 in county

Estimated Soil Components

Showing the 15 largest estimated component series. Component acreages are estimated from SSURGO map-unit component percentages (comppct_r) applied to spatially measured map-unit acreage.

Component	Drainage Class	Hydrologic Group	Estimated Acres	% of Mapped Area
Carnasaw	Well drained	C	71,182.35	13.78%
Leadvale	Poorly drained, Moderately well drained	D, C, C/D	51,448.71	9.96%
Urban land	Unspecified	D	48,834.39	9.45%
Mountainburg	Well drained	D	41,698.08	8.07%
Linker	Well drained	C	36,362.88	7.04%
Perry	Poorly drained	D, C	32,127.79	6.22%
Water	Unspecified	D	28,354.86	5.49%
Rilla	Well drained	B	24,105.9	4.67%
Amy	Poorly drained	C, C/D	23,404.39	4.53%
Keo	Well drained	B	20,176.78	3.9%
Norwood	Well drained	B	17,265.49	3.34%
Guthrie	Poorly drained	D	15,529.07	3.01%
Smithdale	Well drained	B	13,315.3	2.58%
Moreland	Somewhat poorly drained	D	10,297.98	1.99%
Rock outcrop	Unspecified	D	9,901.32	1.92%

Component acreage is estimated from SSURGO map-unit component percentages. Component values are not independently mapped polygon boundaries.

Carnasaw

13.78%

Estimated Acres71,182.35

Drainage ClassWell drained

Hydrologic GroupC

Leadvale

9.96%

Estimated Acres51,448.71

Drainage ClassPoorly drained, Moderately well drained

Hydrologic GroupD, C, C/D

Urban land

9.45%

Estimated Acres48,834.39

Drainage ClassUnspecified

Hydrologic GroupD

Mountainburg

8.07%

Estimated Acres41,698.08

Drainage ClassWell drained

Hydrologic GroupD

Linker

7.04%

Estimated Acres36,362.88

Drainage ClassWell drained

Hydrologic GroupC

Perry

6.22%

Estimated Acres32,127.79

Drainage ClassPoorly drained

Hydrologic GroupD, C

Water

5.49%

Estimated Acres28,354.86

Drainage ClassUnspecified

Hydrologic GroupD

Rilla

4.67%

Estimated Acres24,105.9

Drainage ClassWell drained

Hydrologic GroupB

Amy

4.53%

Estimated Acres23,404.39

Drainage ClassPoorly drained

Hydrologic GroupC, C/D

Keo

3.9%

Estimated Acres20,176.78

Drainage ClassWell drained

Hydrologic GroupB

Norwood

3.34%

Estimated Acres17,265.49

Drainage ClassWell drained

Hydrologic GroupB

Guthrie

3.01%

Estimated Acres15,529.07

Drainage ClassPoorly drained

Hydrologic GroupD

Smithdale

2.58%

Estimated Acres13,315.3

Drainage ClassWell drained

Hydrologic GroupB

Moreland

1.99%

Estimated Acres10,297.98

Drainage ClassSomewhat poorly drained

Hydrologic GroupD

Rock outcrop

1.92%

Estimated Acres9,901.32

Drainage ClassUnspecified

Hydrologic GroupD

Component acreage is estimated from SSURGO map-unit component percentages. Component values are not independently mapped polygon boundaries.

Drainage Class Distribution

Well drained45.39%

234,564.78 acres

Unknown / Unmapped20.07%

103,716.85 acres

Poorly drained16.66%

86,087.47 acres

Moderately well drained11.2%

57,886.13 acres

Somewhat poorly drained4.34%

22,450.32 acres

Excessively drained2.28%

11,774.72 acres

Very poorly drained0.03%

148.68 acres

Somewhat excessively drained0.02%

105.25 acres

Hydrologic Soil Group Distribution

Group D41.67%

215,309.96 acres

Group C21.21%

109,616.83 acres

Group B17.27%

89,258.14 acres

Group C/D12.7%

65,610.84 acres

Group Unknown / Unmapped4.87%

25,163.71 acres

Group A2.28%

11,774.73 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: 6.93%

Nearly Level (0-2%)42.32%

218,665.29 acres

Gently Sloping (2-8%)20.73%

107,118.71 acres

Moderately Sloping (8-15%)1.31%

6,794.65 acres

Steep (15-30%)16.58%

85,649.68 acres

Very Steep (>30%)0%

0 acres

Unspecified Slope19.06%

98,505.88 acres