USDA SSURGO COUNTY SOIL REFERENCE

Harris County, Texas Soil Summary

This page summarizes USDA SSURGO mapped soil information for Harris County, Texas.

Mapped Land Coverage

100%1,092,700.65 mapped acres of 1,092,700.71 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

Clodine-Urban land complex, 0 to 1 percent slopes

Symbol: Ce • 8.59% of mapped area

Largest estimated component

Urban land

227,731.94 acres (20.84% of mapped area)

Mapped units & components

172 mapped soil units

Top 15 shown below · 98 component series

Dominant drainage class

Somewhat poorly drained

Highest acreage drainage class

Dominant hydrologic group

Group D

Runoff potential classification

Weighted average slope

0.51%

Terrain slope analysis

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Top Mapped Soil Units

Showing the 15 largest mapped units, representing 59.76% of mapped soil area.

Symbol	Map Unit Name	Mapped Acres	% of Mapped Area
Ce	Clodine-Urban land complex, 0 to 1 percent slopes	93,845.83	8.59%
LcA	Lake Charles clay, 0 to 1 percent slopes	61,933.61	5.67%
Wy	Wockley-Urban land complex	61,485.78	5.63%
CyuA	Cyfair-Urban land complex, 0 to 1 percent slopes	59,881.73	5.48%
Lu	Lake Charles-Urban land complex, 0 to 3 percent slopes	59,223.87	5.42%
Ak	Addicks-Urban land complex, 0 to 1 percent slopes	49,224.99	4.5%
KauA	Katy-Urban land complex, 0 to 1 percent slopes	34,476.83	3.16%
Be	Bernard-Edna complex, 0 to 1 percent slopes	34,389.43	3.15%
Bd	Bernard clay loam, 0 to 1 percent slopes	32,623.88	2.99%
Bg	Bernard-Urban land complex	32,516.93	2.98%
LeaA	League clay, 0 to 1 percent slopes	30,746.15	2.81%
URLX	Urban land	29,168.22	2.67%
SpmA	Splendora-Urban land complex, 0 to 2 percent slopes	26,304.75	2.41%
Kf	Katy fine sandy loam, 0 to 1 percent slopes	24,182.23	2.21%
Gu	Gessner occasionally ponded-Urban land complex, 0 to 1 percent slopes	22,836.25	2.09%

Ce8.59% of mapped area

Clodine-Urban land complex, 0 to 1 percent slopes

Mapped Area93,845.83 acres

Rank#1 of 172 in county

LcA5.67% of mapped area

Lake Charles clay, 0 to 1 percent slopes

Mapped Area61,933.61 acres

Rank#2 of 172 in county

Wy5.63% of mapped area

Wockley-Urban land complex

Mapped Area61,485.78 acres

Rank#3 of 172 in county

CyuA5.48% of mapped area

Cyfair-Urban land complex, 0 to 1 percent slopes

Mapped Area59,881.73 acres

Rank#4 of 172 in county

Lu5.42% of mapped area

Lake Charles-Urban land complex, 0 to 3 percent slopes

Mapped Area59,223.87 acres

Rank#5 of 172 in county

Ak4.5% of mapped area

Addicks-Urban land complex, 0 to 1 percent slopes

Mapped Area49,224.99 acres

Rank#6 of 172 in county

KauA3.16% of mapped area

Katy-Urban land complex, 0 to 1 percent slopes

Mapped Area34,476.83 acres

Rank#7 of 172 in county

Be3.15% of mapped area

Bernard-Edna complex, 0 to 1 percent slopes

Mapped Area34,389.43 acres

Rank#8 of 172 in county

Bd2.99% of mapped area

Bernard clay loam, 0 to 1 percent slopes

Mapped Area32,623.88 acres

Rank#9 of 172 in county

Bg2.98% of mapped area

Bernard-Urban land complex

Mapped Area32,516.93 acres

Rank#10 of 172 in county

LeaA2.81% of mapped area

League clay, 0 to 1 percent slopes

Mapped Area30,746.15 acres

Rank#11 of 172 in county

URLX2.67% of mapped area

Urban land

Mapped Area29,168.22 acres

Rank#12 of 172 in county

SpmA2.41% of mapped area

Splendora-Urban land complex, 0 to 2 percent slopes

Mapped Area26,304.75 acres

Rank#13 of 172 in county

Kf2.21% of mapped area

Katy fine sandy loam, 0 to 1 percent slopes

Mapped Area24,182.23 acres

Rank#14 of 172 in county

Gu2.09% of mapped area

Gessner occasionally ponded-Urban land complex, 0 to 1 percent slopes

Mapped Area22,836.25 acres

Rank#15 of 172 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
Urban land	Unspecified	D	227,731.94	20.84%
Lake Charles	Moderately well drained	D	91,991.53	8.42%
Bernard	Somewhat poorly drained	D	73,522.05	6.73%
Clodine	Somewhat poorly drained	B/D, C/D	72,229.4	6.61%
Katy	Moderately well drained	C	65,555.45	6%
Wockley	Somewhat poorly drained	C/D	55,617.84	5.09%
Cyfair	Somewhat poorly drained	C/D	45,643.87	4.18%
Addicks	Poorly drained, Moderately well drained	B/D	35,821.28	3.28%
League	Somewhat poorly drained	D	29,655.12	2.71%
Texla	Somewhat poorly drained	D	28,285.9	2.59%
Verland	Somewhat poorly drained	D	25,441.86	2.33%
Gessner	Poorly drained	B/D, D	22,621.48	2.07%
Beaumont	Poorly drained	D	20,909.62	1.91%
Bacliff	Poorly drained	D	20,445.26	1.87%
Splendora	Somewhat poorly drained	D	18,833.96	1.72%

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

Urban land

20.84%

Estimated Acres227,731.94

Drainage ClassUnspecified

Hydrologic GroupD

Lake Charles

8.42%

Estimated Acres91,991.53

Drainage ClassModerately well drained

Hydrologic GroupD

Bernard

6.73%

Estimated Acres73,522.05

Drainage ClassSomewhat poorly drained

Hydrologic GroupD

Clodine

6.61%

Estimated Acres72,229.4

Drainage ClassSomewhat poorly drained

Hydrologic GroupB/D, C/D

Katy

Estimated Acres65,555.45

Drainage ClassModerately well drained

Hydrologic GroupC

Wockley

5.09%

Estimated Acres55,617.84

Drainage ClassSomewhat poorly drained

Hydrologic GroupC/D

Cyfair

4.18%

Estimated Acres45,643.87

Drainage ClassSomewhat poorly drained

Hydrologic GroupC/D

Addicks

3.28%

Estimated Acres35,821.28

Drainage ClassPoorly drained, Moderately well drained

Hydrologic GroupB/D

League

2.71%

Estimated Acres29,655.12

Drainage ClassSomewhat poorly drained

Hydrologic GroupD

Texla

2.59%

Estimated Acres28,285.9

Drainage ClassSomewhat poorly drained

Hydrologic GroupD

Verland

2.33%

Estimated Acres25,441.86

Drainage ClassSomewhat poorly drained

Hydrologic GroupD

Gessner

2.07%

Estimated Acres22,621.48

Drainage ClassPoorly drained

Hydrologic GroupB/D, D

Beaumont

1.91%

Estimated Acres20,909.62

Drainage ClassPoorly drained

Hydrologic GroupD

Bacliff

1.87%

Estimated Acres20,445.26

Drainage ClassPoorly drained

Hydrologic GroupD

Splendora

1.72%

Estimated Acres18,833.96

Drainage ClassSomewhat poorly drained

Hydrologic GroupD

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

Drainage Class Distribution

Somewhat poorly drained37.67%

411,603.69 acres

Unknown / Unmapped23.17%

253,176.18 acres

Moderately well drained20.06%

219,220.62 acres

Poorly drained14.58%

159,346.14 acres

Well drained4.32%

47,197.21 acres

Very poorly drained0.2%

2,142.09 acres

Somewhat excessively drained0%

13.9 acres

Excessively drained0%

0.77 acres

Hydrologic Soil Group Distribution

Group D56.54%

617,847.25 acres

Group C/D17.83%

194,838.45 acres

Group Unknown / Unmapped9.32%

101,816.43 acres

Group C7.33%

80,054.03 acres

Group B/D5.75%

62,783.8 acres

Group A1.86%

20,322.86 acres

Group B1.38%

15,037.77 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: 0.51%

Nearly Level (0-2%)95.62%

1,044,892.08 acres

Gently Sloping (2-8%)2.01%

21,963.13 acres

Moderately Sloping (8-15%)0.06%

683.04 acres

Steep (15-30%)0%

0 acres

Very Steep (>30%)0%

0 acres

Unspecified Slope2.3%

25,162.35 acres