Environmental Engineering Reference
In-Depth Information
The pattern of pollution transport to the river depends on hydraulic loading and is
influenced by seasonal conditions. During the dry season, the precipitation is very low
and the run-off during this period could
Figure 8.6. Rainfall and runoff
characteristics of the study area.
a) Average flow rates of Marimba
River at C
24
for the period 1953-2000.
b) Total monthly rainfall at
Crowborough gauge station during the
study period.
be neglected. During the 1998 dry season the evapotranspiration capacity was 847 mm
(AQUASTAT 2003) while the hydraulic load due to sludge and effluent mixture was
1019 mm as an average annual figure.
