Detention ponds help control the rate of flow by using a control device that maintains the pre-development rate of flow. The volume of the detention pond is calculated by comparing the pre- and post- development runoff volumes. The difference is the detention volume.
Zayn Malik & Gigi Hadid: Why He Loves Dating Her Even More Than Perrie Edwards. Poor Perrie Edwards. Not only is Zayn Malik happy with his new girlfriend, Gigi Hadid, but he loves her even more than the Little Mix singer, HollywoodLife.com has EXCLUSIVELY learned. Find out why!
And that brings us to ANOTHER X Factor contestant, Rebecca Ferguson, who Zayn dated despite being six years her junior. When they got together, Zayn was only 18, which obviously shocked TONS of people. The duo only lasted for about four months, stating that their age gap was just too much to handle. Photo: WENN.