USDA SSURGO COUNTY SOIL REFERENCE

Orleans Parish, Louisiana Soil Summary

This page summarizes USDA SSURGO mapped soil information for Orleans Parish, Louisiana.

Mapped Land Coverage

100%223,903.29 mapped acres of 223,903.53 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

Water

Symbol: W • 51.5% of mapped area

Largest estimated component

Water

121,199.13 acres (54.13% of mapped area)

Mapped units & components

27 mapped soil units

Top 15 shown below · 22 component series

Dominant drainage class

Unknown / Unmapped

Highest acreage drainage class

Dominant hydrologic group

Group Unknown / Unmapped

Runoff potential classification

Weighted average slope

0.46%

Terrain slope analysis

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Top Mapped Soil Units

Showing the 15 largest mapped units, representing 98.32% of mapped soil area.

Symbol	Map Unit Name	Mapped Acres	% of Mapped Area
W	Water	115,307.85	51.5%
CE	Clovelly muck, 0 to 0.2 percent slopes, very frequently flooded	18,382.56	8.21%
Sk	Schriever clay, 0 to 1 percent slopes, rarely flooded	17,834.92	7.97%
LF	Lafitte muck, 0 to 0.2 percent slopes, very frequently flooded	11,825.57	5.28%
Ha	Harahan clay, 0 to 1 percent slopes	10,348.3	4.62%
AT	Aquents, dredged, frequently flooded	8,345.12	3.73%
An	Aquents, dredged	6,864.47	3.07%
W	Water	4,833.75	2.16%
Cm	Cancienne silt loam, 0 to 1 percent slopes	4,792	2.14%
Ae	Allemands muck, 0 to 0.2 percent slopes, drained	4,698.64	2.1%
Ke	Kenner muck drained	4,493.31	2.01%
Ww	Westwego clay, 0 to 0.5 percent slopes	3,775.08	1.69%
Ub	Urban land	3,291.29	1.47%
GE	Gentilly muck, 0 to 0.5 percent slopes, very frequently flooded	2,922.3	1.31%
Co	Cancienne silty clay loam, 0 to 1 percent slopes	2,372.46	1.06%

W51.5% of mapped area

Water

Mapped Area115,307.85 acres

Rank#1 of 27 in county

CE8.21% of mapped area

Clovelly muck, 0 to 0.2 percent slopes, very frequently flooded

Mapped Area18,382.56 acres

Rank#2 of 27 in county

Sk7.97% of mapped area

Schriever clay, 0 to 1 percent slopes, rarely flooded

Mapped Area17,834.92 acres

Rank#3 of 27 in county

LF5.28% of mapped area

Lafitte muck, 0 to 0.2 percent slopes, very frequently flooded

Mapped Area11,825.57 acres

Rank#4 of 27 in county

Ha4.62% of mapped area

Harahan clay, 0 to 1 percent slopes

Mapped Area10,348.3 acres

Rank#5 of 27 in county

AT3.73% of mapped area

Aquents, dredged, frequently flooded

Mapped Area8,345.12 acres

Rank#6 of 27 in county

An3.07% of mapped area

Aquents, dredged

Mapped Area6,864.47 acres

Rank#7 of 27 in county

W2.16% of mapped area

Water

Mapped Area4,833.75 acres

Rank#8 of 27 in county

Cm2.14% of mapped area

Cancienne silt loam, 0 to 1 percent slopes

Mapped Area4,792 acres

Rank#9 of 27 in county

Ae2.1% of mapped area

Allemands muck, 0 to 0.2 percent slopes, drained

Mapped Area4,698.64 acres

Rank#10 of 27 in county

Ke2.01% of mapped area

Kenner muck drained

Mapped Area4,493.31 acres

Rank#11 of 27 in county

Ww1.69% of mapped area

Westwego clay, 0 to 0.5 percent slopes

Mapped Area3,775.08 acres

Rank#12 of 27 in county

Ub1.47% of mapped area

Urban land

Mapped Area3,291.29 acres

Rank#13 of 27 in county

GE1.31% of mapped area

Gentilly muck, 0 to 0.5 percent slopes, very frequently flooded

Mapped Area2,922.3 acres

Rank#14 of 27 in county

Co1.06% of mapped area

Cancienne silty clay loam, 0 to 1 percent slopes

Mapped Area2,372.46 acres

Rank#15 of 27 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
Water	Unspecified	Unspecified	121,199.13	54.13%
Clovelly	Very poorly drained	C/D	18,064.44	8.07%
Schriever	Poorly drained	D	17,867.89	7.98%
Aquents	Very poorly drained	D	13,963.17	6.24%
Lafitte	Very poorly drained	A/D	9,619.44	4.3%
Harahan	Poorly drained	D, C	9,465.37	4.23%
Cancienne	Somewhat poorly drained	C	6,687.27	2.99%
Kenner	Poorly drained, Very poorly drained	D, A	4,896.68	2.19%
Allemands	Poorly drained, Very poorly drained	C, C/D	4,676.03	2.09%
Westwego	Poorly drained	D, C	3,958.77	1.77%
Urban land	Unspecified	Unspecified	3,291.29	1.47%
Gentilly	Very poorly drained	D	2,930.16	1.31%
Scatlake	Very poorly drained	Unspecified	2,088.61	0.93%
Gramercy	Poorly drained	D	1,279.59	0.57%
Thibaut	Poorly drained	D	1,154.14	0.52%

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

Water

54.13%

Estimated Acres121,199.13

Drainage ClassUnspecified

Hydrologic GroupUnspecified

Clovelly

8.07%

Estimated Acres18,064.44

Drainage ClassVery poorly drained

Hydrologic GroupC/D

Schriever

7.98%

Estimated Acres17,867.89

Drainage ClassPoorly drained

Hydrologic GroupD

Aquents

6.24%

Estimated Acres13,963.17

Drainage ClassVery poorly drained

Hydrologic GroupD

Lafitte

4.3%

Estimated Acres9,619.44

Drainage ClassVery poorly drained

Hydrologic GroupA/D

Harahan

4.23%

Estimated Acres9,465.37

Drainage ClassPoorly drained

Hydrologic GroupD, C

Cancienne

2.99%

Estimated Acres6,687.27

Drainage ClassSomewhat poorly drained

Hydrologic GroupC

Kenner

2.19%

Estimated Acres4,896.68

Drainage ClassPoorly drained, Very poorly drained

Hydrologic GroupD, A

Allemands

2.09%

Estimated Acres4,676.03

Drainage ClassPoorly drained, Very poorly drained

Hydrologic GroupC, C/D

Westwego

1.77%

Estimated Acres3,958.77

Drainage ClassPoorly drained

Hydrologic GroupD, C

Urban land

1.47%

Estimated Acres3,291.29

Drainage ClassUnspecified

Hydrologic GroupUnspecified

Gentilly

1.31%

Estimated Acres2,930.16

Drainage ClassVery poorly drained

Hydrologic GroupD

Scatlake

0.93%

Estimated Acres2,088.61

Drainage ClassVery poorly drained

Hydrologic GroupUnspecified

Gramercy

0.57%

Estimated Acres1,279.59

Drainage ClassPoorly drained

Hydrologic GroupD

Thibaut

0.52%

Estimated Acres1,154.14

Drainage ClassPoorly drained

Hydrologic GroupD

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

Drainage Class Distribution

Unknown / Unmapped56.09%

125,594.74 acres

Very poorly drained21.87%

48,977.28 acres

Poorly drained18.66%

41,773.85 acres

Somewhat poorly drained3.27%

7,332.78 acres

Hydrologic Soil Group Distribution

Group Unknown / Unmapped57.52%

128,793.02 acres

Group D22.81%

51,066.27 acres

Group C/D8.12%

18,188.15 acres

Group C5.26%

11,786.54 acres

Group A/D4.48%

10,025.35 acres

Group A1.71%

3,819.31 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: 0.46%

Nearly Level (0-2%)43.63%

97,678.01 acres

Gently Sloping (2-8%)0%

0 acres

Moderately Sloping (8-15%)0.18%

405.91 acres

Steep (15-30%)0%

0 acres

Very Steep (>30%)0%

0 acres

Unspecified Slope56.09%

125,594.74 acres