| Abstract | From the runoff records used in this study, the average annual
mean and average monthly mean runoff were computed for the period 1955 to 1960. Results show that the month of September experiences the
maximum flow, while the month/of April and March experience the minimum. The average annual runoff is related to the catchment area in a simple power function, Qa/sqkm = 0.00448 A1.105
The stream orders, u, were determined and number of streams, Nu, counted. Plots of stream orders, u, against logarithm of the number of streams, Nu, resulted in an average bifurcation, Rb, which ranges from 3.1 to 4.75 in all of the eight catchments. The length of the main stream in each catchments was measured, and a relationship of an
exponential form between the length and the catchment area was found: L = 0.867 A0.635.
A random sample blocks method of determining the drainage density, D, gives values that ranges from 2.5 to 3.51. It was found that the specific average annual mean runoff varies inversely with the drainage
density, in the form Qa/Sgkm = 0.174 D -2 71 ,and the baseflow in the form Qb/sqkm ,= 0.107 D
-3.02 |
