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.