The Study of Stage and Discharge Relationship of Detention Pond

Due to rapid development nowadays, the natural storage of rainfall water is affected as
water cannot infiltrate into the soil and thus, the water will remain as surface water
which can lead to flooding. Detention basin had been applied by most of the countries
in the world to encounter this problem and many researches had been done in this field.
The objective of this research is to study the stage and discharge relationship of the
detention pond. The study had been done using physical model of detention pond in the
laboratory which has been scaled down 100 times from the real size. The experiment
was repeated by manipulating the number of valve rotation to get different discharge of
inflow. For every rotation, the stage and discharge was calculated and relationship was
developed. From the experiment that had been done, it is proved that the stage will
increase with increased discharge. Besides, the storage also increased as the stage
increased. This experiment however can be further studied and corrected using the
physical model that having the same characteristic and condition as the real detention
pond so that the result obtained more accurate and precise.