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Floodwater Harvesting
Published in Saeid Eslamian, Faezeh Eslamian, Flood Handbook, 2022
Nasir Ahmad Rather, Shahid Ul Islam, Mir Bintul Huda, Saeid Eslamian
Silt detention dam in addition to water harvesting is for the retention of the silt load of the runoff water from the catchment area. Water is stored in the reservoir where deposition of silt takes place and the water is rendered silt less for further use. These types of dams are constructed in the lower reaches of the catchment where water enters the valley and is finally released into the streams. There is a provision of an outlet for taking out the water for irrigation purposes. For increased efficiency, a series of such dams can be constructed along the slope of the catchment.
Developing a mathematical framework in preliminary designing of detention rockfill dams for flood peak reduction
Published in Engineering Applications of Computational Fluid Mechanics, 2019
Hossien Riahi-Madvar, Majid Dehghani, Shatirah Akib, Shahaboddin Shamshirband, Kwok-wing Chau
The first step in the design of these structures is to determine the volume of detention reservoir in such a way that the peak of outflow discharge reduces to the allowable peak of flood discharge that has minimized damages. The sites that have the proper potential for detention dam construction are determined based on the allowable peak of flood discharge (related to the downstream conditions). After determining the suitable sites, the second step will involve preliminary designing of the detention dam and finally, the optimized size and shape of the detention dam are determined (Riahi Madvar et al., 2009). Another interesting topic of detention rockfill dams is the da breach risk and its effective factors that should be considered in design and construction of these ponds (Eghbali, Behzadian, Hooshyaripor, Farmani, & Duncan, 2017; Hooshyaripor, Tahershamsi, & Behzadian, 2015).