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Table 1 Field measurements for gullies and slides in the study area

From: Geotechnical evaluation of gully erosion and landslides materials and their impact in Iguosa and its environs, southern Nigeria

S/N

Longitudes (E)

Latitudes (N)

Elevations (m)

Lateralextents (m)

Depth (m)

Width (m)

Slopeangle (°)

Description of slope

1

05°41′23″

06°27′40″

332.00

80.0

68.7

23.2

32

Steepslope

2

05°37′43″

06°29′41″

310.80

40.2

68.2

20.4

31

Steepslope

3

05°43′16″

06°28′32″

306.00

80.0

66.9

28.4

20

Moderately steepslope

4

05040′10″

06°28′30″

200.40

73.0

66.3

31.6

18

Moderately steepslope

5

05°12′13″

06°24′00″

120.00

64.0

64.7

30.4

16

Moderately steepslope

6

05°13′13″

06°04′14″

118.60

93.0

67.0

33.8

13

Moderateslope

7

05°32′07″

06°32′00″

58.40

69.4

67.1

33.7

10

Moderateslope

8

05°12′18″

06°37′01″

26.30

80.2

20.3

72.6

09

Gentleslope

9

05°37′13″

06°25′00″

24.70

50.2

4.1

46.7

07

Gentleslope

10

05° 35′00″

06°27′01″

22.86

43.0

2.6

30.4

07

Gentleslope

11

05°32′13″

06°24′00″

120.00

64.0

60.7

40.4

16

Moderately steepslope

12

05°34′00″

06° 27′01″

118.60

93.0

65.0

34.8

13

Moderately steepslope

13

05°37′13″

06°28′32″

306.00

80.0

66.9

28.4

20

Moderately steepslope

14

05°41′30″

06°27′40″

200.40

73.0

64.3

32.6

18

Moderatelysteepslope

15

05°52′13″

07034′00″

120.00

64.0

64.7

32.4

16

Moderately steepslope

16

05°37′40″

06°26′30″

332.0

80.0

60.7

24.2

32

Steepslope

17

05°38 13″

06°25′00″

310.80

40.2

68.4

20.4

31

Steepslope

18

05°43′16″

06°38′32″

308.00

80.0

66.9

30.4

32

Steepslope

19

05°44′10″

06038′30″

204.40

73.0

64.3

32.6

32

Steepslope

20

05°45′13″

06°40′00″

122.00

64.0

63.7

30.4

32

Steepslope

   

MEAN = 183.11

MEAN = 87.30

MEAN = 57.07

MEAN = 32.24

MEAN = 20.25

Remarks: gentle steepslopes