USDA SSURGO COUNTY SOIL REFERENCE

Madison County, Alabama Soil Summary

This page summarizes USDA SSURGO mapped soil information for Madison County, Alabama.

Mapped Land Coverage

100%520,137.7 mapped acres of 520,137.72 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

Rockland, limestone, steep

Symbol: Rs • 12.63% of mapped area

Largest estimated component

Barfield

68,732.62 acres (13.21% of mapped area)

Mapped units & components

216 mapped soil units

Top 15 shown below · 72 component series

Dominant drainage class

Well drained

Highest acreage drainage class

Dominant hydrologic group

Group B

Runoff potential classification

Weighted average slope

8.02%

Terrain slope analysis

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Top Mapped Soil Units

Showing the 15 largest mapped units, representing 57.65% of mapped soil area.

Symbol	Map Unit Name	Mapped Acres	% of Mapped Area
Rs	Rockland, limestone, steep	65,714.77	12.63%
DbB2	Decatur silty clay loam, 2 to 6 percent slopes, eroded	65,087.47	12.51%
Ad	Abernathy-Emory silt loams, 0 to 2 percent slopes	30,156.86	5.8%
BwB2	Bewleyville silt loam, 2 to 5 percent slopes, moderately eroded	16,563.22	3.18%
Me	Melvin silty clay loam	15,642.75	3.01%
Lk	Lindside silty clay loam	13,685.25	2.63%
Rr	Rockland, limestone, hilly	12,704.6	2.44%
Bd	Baxter (Fullerton) gravelly silt loam, 6 to 12 percent slopes, eroded	11,924.37	2.29%
Dt	Dickson silt loam, 2 to 5 percent slopes	11,542.34	2.22%
Gu	Guthrie silt loam, 0 to 2 percent slopes, rarely flooded	11,373.05	2.19%
Bb	Baxter (Fullerton) gravelly silt loam, 2 to 6 percent slopes, eroded	10,793.12	2.08%
Lo	Lobelville silt loam, 0 to 3 percent slopes, occasionally flooded	10,383.6	2%
Op	Ooltewah silt loam	9,157.32	1.76%
Ro	Robertsville (Ketona) silt loam, 0 to 2 percent slopes, occasionally ponded	7,742.33	1.49%
W	Water	7,407.71	1.42%

Rs12.63% of mapped area

Rockland, limestone, steep

Mapped Area65,714.77 acres

Rank#1 of 216 in county

DbB212.51% of mapped area

Decatur silty clay loam, 2 to 6 percent slopes, eroded

Mapped Area65,087.47 acres

Rank#2 of 216 in county

Ad5.8% of mapped area

Abernathy-Emory silt loams, 0 to 2 percent slopes

Mapped Area30,156.86 acres

Rank#3 of 216 in county

BwB23.18% of mapped area

Bewleyville silt loam, 2 to 5 percent slopes, moderately eroded

Mapped Area16,563.22 acres

Rank#4 of 216 in county

Me3.01% of mapped area

Melvin silty clay loam

Mapped Area15,642.75 acres

Rank#5 of 216 in county

Lk2.63% of mapped area

Lindside silty clay loam

Mapped Area13,685.25 acres

Rank#6 of 216 in county

Rr2.44% of mapped area

Rockland, limestone, hilly

Mapped Area12,704.6 acres

Rank#7 of 216 in county

Bd2.29% of mapped area

Baxter (Fullerton) gravelly silt loam, 6 to 12 percent slopes, eroded

Mapped Area11,924.37 acres

Rank#8 of 216 in county

Dt2.22% of mapped area

Dickson silt loam, 2 to 5 percent slopes

Mapped Area11,542.34 acres

Rank#9 of 216 in county

Gu2.19% of mapped area

Guthrie silt loam, 0 to 2 percent slopes, rarely flooded

Mapped Area11,373.05 acres

Rank#10 of 216 in county

Bb2.08% of mapped area

Baxter (Fullerton) gravelly silt loam, 2 to 6 percent slopes, eroded

Mapped Area10,793.12 acres

Rank#11 of 216 in county

Lo2% of mapped area

Lobelville silt loam, 0 to 3 percent slopes, occasionally flooded

Mapped Area10,383.6 acres

Rank#12 of 216 in county

Op1.76% of mapped area

Ooltewah silt loam

Mapped Area9,157.32 acres

Rank#13 of 216 in county

Ro1.49% of mapped area

Robertsville (Ketona) silt loam, 0 to 2 percent slopes, occasionally ponded

Mapped Area7,742.33 acres

Rank#14 of 216 in county

W1.42% of mapped area

Water

Mapped Area7,407.71 acres

Rank#15 of 216 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
Barfield	Well drained	D	68,732.62	13.21%
Decatur	Well drained	B	67,668.9	13.01%
Dickson	Moderately well drained	C, C/D	28,898.17	5.56%
Abernathy	Well drained	C, B	21,367.94	4.11%
Baxter	Well drained	B	17,744.21	3.41%
Bewleyville	Well drained	B	15,108.38	2.9%
Lobelville	Somewhat poorly drained, Moderately well drained	C, B/D	14,217.89	2.73%
Melvin	Somewhat poorly drained, Poorly drained	B/D	14,080.92	2.71%
Hermitage	Well drained	B	13,610.43	2.62%
Lindside	Somewhat poorly drained	B/D	12,316.75	2.37%
Guthrie	Poorly drained	D, C/D	11,029.31	2.12%
Ooltewah	Somewhat poorly drained	B/D	10,018.97	1.93%
Baxter (Fullerton)	Well drained	B	10,014.5	1.93%
Allen	Well drained	B	8,074.9	1.55%
Etowah	Well drained	B	7,969.21	1.53%

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

Barfield

13.21%

Estimated Acres68,732.62

Drainage ClassWell drained

Hydrologic GroupD

Decatur

13.01%

Estimated Acres67,668.9

Drainage ClassWell drained

Hydrologic GroupB

Dickson

5.56%

Estimated Acres28,898.17

Drainage ClassModerately well drained

Hydrologic GroupC, C/D

Abernathy

4.11%

Estimated Acres21,367.94

Drainage ClassWell drained

Hydrologic GroupC, B

Baxter

3.41%

Estimated Acres17,744.21

Drainage ClassWell drained

Hydrologic GroupB

Bewleyville

2.9%

Estimated Acres15,108.38

Drainage ClassWell drained

Hydrologic GroupB

Lobelville

2.73%

Estimated Acres14,217.89

Drainage ClassSomewhat poorly drained, Moderately well drained

Hydrologic GroupC, B/D

Melvin

2.71%

Estimated Acres14,080.92

Drainage ClassSomewhat poorly drained, Poorly drained

Hydrologic GroupB/D

Hermitage

2.62%

Estimated Acres13,610.43

Drainage ClassWell drained

Hydrologic GroupB

Lindside

2.37%

Estimated Acres12,316.75

Drainage ClassSomewhat poorly drained

Hydrologic GroupB/D

Guthrie

2.12%

Estimated Acres11,029.31

Drainage ClassPoorly drained

Hydrologic GroupD, C/D

Ooltewah

1.93%

Estimated Acres10,018.97

Drainage ClassSomewhat poorly drained

Hydrologic GroupB/D

Baxter (Fullerton)

1.93%

Estimated Acres10,014.5

Drainage ClassWell drained

Hydrologic GroupB

Allen

1.55%

Estimated Acres8,074.9

Drainage ClassWell drained

Hydrologic GroupB

Etowah

1.53%

Estimated Acres7,969.21

Drainage ClassWell drained

Hydrologic GroupB

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

Drainage Class Distribution

Well drained56.47%

293,740.73 acres

Moderately well drained12.09%

62,889.2 acres

Somewhat poorly drained8.1%

42,135.33 acres

Poorly drained7.96%

41,380.6 acres

Unknown / Unmapped1.45%

7,532.88 acres

Somewhat excessively drained0.27%

1,400.67 acres

Excessively drained0.03%

160.86 acres

Hydrologic Soil Group Distribution

Group B34.92%

181,641.64 acres

Group D17.22%

89,559.2 acres

Group B/D10.88%

56,610.79 acres

Group C9.98%

51,899.26 acres

Group C/D9.81%

51,013.81 acres

Group A2.11%

10,982.69 acres

Group Unknown / Unmapped1.45%

7,532.88 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: 8.02%

Nearly Level (0-2%)30.67%

159,518.72 acres

Gently Sloping (2-8%)31.41%

163,385.11 acres

Moderately Sloping (8-15%)7.83%

40,712.02 acres

Steep (15-30%)4.69%

24,416.42 acres

Very Steep (>30%)10.32%

53,675.13 acres

Unspecified Slope1.45%

7,532.88 acres