## 4 Results
### Quantitative Morphometric Analysis
The basin shape index indicates the lowest reading for C1 with a value of 1.84 and the highest value for SC6 at 5.97 (Table 5; Figure 8). The calculated values of the catchment elongation ratio (Re) range between 0.46 for SC6 and 0.83 for C1 (highest value) (Table 5; Figure 8). The catchment circularity ratio (\(\rm R_{e}\)) recorded its lowest value at 0.20 for C3, while the highest ratio was estimated for SC1 (0.42) (Table 5; Figure 8). \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Catchments/** & **Area (km\({}^{2}\))** & **Perimeter (km)** & **Length (km)** & **Width (km)** \\ \hline SC6 & 95.11 & 74.70 & 23.83 & 05.84 \\ \hline SC7 & 187.68 & 90.06 & 25.49 & 14.38 \\ \hline SC8 & 74.24 & 59.85 & 17.71 & 08.30 \\ \hline SC9 & 167.96 & 85.53 & 25.52 & 10.38 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: _Cont._  
Figure 6: Catchments and sub-catchments map showing values and distribution of the catchment’s geometry parameters of the study area. The catchment relief indexes of the entire catchments and sub-catchments are given in Table 5 and illustrated in Figure 9. The basin relief values vary from 312 m (SC1) to 1447 m (C2). The relief ratio index provides 19.05 m/km for C4 as the lowest value and 51.07 m/km for SC3. SC4 and SC2 provide the lowest and highest values (0.25 and 1.33), respectively. \begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Catchments/**Sub-Catchments**} & \multicolumn{3}{c}{**Stream Indexes**} & \multicolumn{3}{c}{**Areal Indexes**} & \multicolumn{3}{c}{**Relief Indexes**} \\ \cline{2-11}  & \(\mathbf{R_{b}}\) & \(\mathbf{L_{u}}\) (m) & \(\mathbf{\Sigma_{u}}\) & \(\mathbf{R_{c}}\) & \(\mathbf{R_{e}}\) & \(\mathbf{B_{sh}}\) & \(\mathbf{D_{d}}\) & \(\mathbf{F}\) & \(\mathbf{R_{r}}\) (m/km) & \(\mathbf{R_{a}}\) \\ \hline C1 & 2.43 & 1358.47 & 1070 & 0.22 & 0.83 & 1.84 & 0.856 & 0.674 & 1088 & 20.11 & 0.94 \\ \hline C2 & 1.71 & 584.32 & 448 & 0.23 & 0.73 & 2.33 & 0.882 & 0.671 & 1447 & 36.78 & 1.27 \\ \hline C3 & 1.79 & 769.09 & 561 & 0.20 & 0.68 & 2.74 & 0.895 & 0.653 & 1332 & 27.41 & 1.19 \\ \hline C4 & 2.34 & 719.04 & 540 & 0.25 & 0.61 & 3.36 & 0.866 & 0.650 & 1007 & 19.05 & 0.87 \\ \hline C5 & 2.39 & 651.18 & 484 & 0.26 & 0.67 & 2.76 & 0.869 & 0.647 & 937 & 20.59 & 0.81 \\ \hline C6 & 3.74 & 374.61 & 264 & 0.27 & 0.63 & 3.18 & 0.919 & 0.642 & 1165 & 32.36 & 1.07 \\ \hline SC1 & 1.79 & 55.80 & 34 & 0.42 & 0.68 & 2.72 & 0.816 & 0.491 & 312 & 22.87 & 0.25 \\ \hline SC2 & 1.97 & 178.36 & 134 & 0.21 & 0.49 & 5.21 & 0.934 & 0.702 & 1432 & 45.38 & 1.33 \\ \hline SC3 & 2.23 & 150.35 & 95 & 0.36 & 0.66 & 2.89 & 1.016 & 0.642 & 1058 & 51.07 & 1.07 \\ \hline SC4 & 1.53 & 91.36 & 53 & 0.33 & 0.64 & 3.06 & 0.945 & 0.543 & 350 & 20.32 & 0.33 \\ \hline SC5 & 2.09 & 78 & 56 & 0.29 & 0.60 & 3.48 & 0.833 & 0.592 & 575 & 31.82 & 0.47 \\ \hline SC6 & 2.61 & 89.76 & 51 & 0.21 & 0.46 & 5.97 & 0.943 & 0.532 & 609 & 25.55 & 0.57 \\ \hline SC7 & 1.99 & 161.35 & 123 & 0.29 & 0.60 & 3.46 & 0.859 & 0.659 & 483 & 18.94 & 0.41 \\ \hline SC8 & 1.60 & 65.35 & 45 & 0.26 & 0.54 & 4.22 & 0.880 & 0.602 & 408 & 23.03 & 0.35 \\ \hline SC9 & 1.98 & 155.31 & 114 & 0.28 & 0.57 & 3.87 & 0.924 & 0.677 & 942 & 36.90 & 0.87 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Catchments characteristics of stream, areal, and relief indexes of the study catchments and sub-catchments. Figure 7: Catchments and sub-catchments map showing values and distribution of the catchments stream parameters of the study area. Figure 8: Catchments and sub-catchments map showing values and distribution of the catchment’s areal parameters of the study area. Figure 9: Catchments and sub-catchments map showing values and distribution of the catchment’s relief parameters of the study area.