It is difficult to determine how long it takes for rainfall to produce runoff. It
entirely depends on the rainfall condition. Intensive rainfall produces high runoff. The
stream flow may change within five minutes if there is heavy rainfall, because most of
the out rocked areas which produce direct surface runoff are found on the lower parts
of the watershed near by the outlet. This part of the watershed is highly degraded
because of continuous annual cultivation during the main rainfall seasons in addition
to the melting behavior of its soil, regosols