ABSTRACT
The seabed filtration system is a type of gallery design that requires a number of predesign investigations. The surface water intake/groundwater recharge system is an effective alternative intake design for freshwater systems, particularly when there are quality problems in the source water body. A modified surface intake/reservoir system can be designed in a large number of ways. There are some areas in the world where the installation of a modified intake system appears to be not feasible, and conventional intake systems are used at great expense. The primary purpose of a modified intake system is to provide a constant feedwater quality containing a minimum concentration of suspended sediment or organic material. In the Arabian Gulf, all of the natural hydrogeologic and water quality characteristics in certain coastal areas make both conventional intakes or modified intakes, such as beach wells or galleries, very expensive or not feasible.
