Table 3: Catchment sedimentation within a sample of fanya juu and soil bund structures in the Minizr catchment.

PSWC measuresa

Position in watershedb

Sediment depth(m)c

Total sedimentation (m330 m-1) d

Rate of sedimentatione

 

 

 

 

m3m-1y-1

kgm-1y-1

Fanya juu

Upper

0.11

1.92

0.064a

65.28a

Fanya juu

Middle

0.09

1.68

0.056a

57.12a

Fanya juu

Lower

0.10

1.74

0.058a

59.16a

Soil bunds

Upper

0.08

1.20

0.040a

40.80a

Soil bunds

Middle

0.10

1.50

0.050a

51.00a

Soil bunds

Lower

0.11

1.65

0.055a

56.10a

Average

 

0.09

1.60

0.053

55.00

Source (Mekonen, et al. 2017)[79]
aAverage sedimentation width is 0•6 m (fanya juu); 0•5m (soil bund) and ditch length is 30 m; bPosition in the catchment; Upper ( > 7%), Middle (5-7%) and Lower ( < 5%) slopes; cTwo years average deposited sediment depth; dTwo years average sediment deposited behind 30 m structures; eTwo years average rate of sedimentation. A Significance test of mean difference among treatments at p < 0•05, which shows a non-significant difference.