S/N

Competencies in:

= NG

R

Contour Bunding

1

Identify the erosion site

4.00

2.69

1.31

IN

2

Prepare the site for contour bonding

3.96

2.69

1.27

IN

3

Observe the contour and its slope

3.96

2.41

1.55

IN

4

Measure the contour and its slope

3.93

2.56

1.37

IN

5

Lay out contour using stake driven into the ground on point of equal elevation

3.96

2.39

1.57

IN

6

Determine the elevation using farm level or Abney level

3.95

2.45

1.50

IN

7

Construct the contour bund using suitable implement

3.92

2.39

1.52

IN

8

Space the contour bund at 10 - 20 cm interval

3.79

1.95

1.84

IN

9

Make the contour bund during period of low rainfall

3.93

1.72

2.20

IN

10

Plant crops on the bunds

3.94

1.52

2.43

IN

11

Stabilize the contour bund with vegetation to withstand heavy rainstorm

4.00

1.46

2.54

IN

Terracing

12

Clear the farmland of existing vegetation

3.93

1.63

2.30

IN

13

Survey the farmland and note the slope and gullies

3.92

3.16

0.76

IN

14

Plan the terrace according to the drainage unit of the farm

4.00

2.54

1.46

IN

15

Mark out position for the construction of the terrace

3.94

1.63

2.31

IN

16

Construct the terrace with appropriate implement

3.91

1.82

2.09

IN

17

Construct the terrace by breaking the slope into steps

3.88

1.61

2.27

IN

18

Place barriers such as sandbag, log of wood

3.96

1.46

2.50

IN

19

Arrange for the maintenance of the terrace

3.96

1.46

2.50

IN

20

Construct diversion channel to remove excess water

3.78

1.45

2.34

IN

21

Plant crops on the terrace

4.00

1.88

2.12

IN

22

Plant grass along the diversion channel to prevent under wash

3.96

1.53

2.43

IN

Channeling

23

Prepare the site for channeling

3.78

1.13

2.24

IN

24

Survey the farmland

3.78

2.83

0.95

IN

25

Determine the slope, length and width of the slope

3.81

1.65

2.17

IN

26

Measure out the length and width of the slope

3.76

1.52

2.24

IN

27

Determine the channel depth

3.81

1.43

2.39

IN

28

Build the channel incorporation with adjacent land owner for common runoff outlet system

3.79

1.43

2.36

IN

29

Excavate the channel with relevant implement

3.73

1.45

2.28

IN

30

Build the channel using concrete or cement block or corrugated metals

3.74

1.45

2.28

IN

31

Install drop-check structure at interval along the channel to reduce the rate of flow

3.74

1.35

2.39

IN

32

Arrange for a permanent maintenance

3.72

1.53

2.19

IN

33

Grass the outlet to prevent wash

3.64

1.53

2.11

IN

34

Dig catchments pits beside farmland

3.72

1.53

2.20

IN

Tunneling

35

Survey farmland and note the direction of water flow and its stand

3.79

1.42

2.37

IN

36

Draw plan for the tunneling

3.73

1.33

2.40

IN

37

Measure out the position for the installation of tunnel

3.79

1.32

2.48

IN

38

Build the tunnel with concrete materials

3.69

1.41

2.28

IN

39

Excavate soil from the measured position

3.70

1.26

2.42

IN

40

Build the tunnel when rainfall is low

3.62

1.21

2.42

IN

41

Install the tunnel in the excavated position

3.71

1.32

2.39

IN

42

Cover the tunnel with top soil

3.81

1.15

2.66

IN

43

Allow water to pass through the tunnel

3.81

1.15

2.66

IN

44

Connect the tunnel to the nearest convenient outlet

3.72

1.35

2.35

IN

45

Plant grasses along the outlet to prevent under wash

3.58

1.27

2.31

IN