Design of Storm Water Drainage System for the Center of Halhul City

Abstract

Drainage as mean of disposal , till recently has been largely a neglected aspect in the west bank now. There is no storm water drainage system at present in the center of halhul city. The storm water accumulates on the main streets as a result of heavy precipitation ( running water) population growth , and the development and extension of halhul city. At the same time, the accelerated development and grow of halhul city has led change in the hydrological and geomorphological features . most of the areas in halhul city don’t have a natural drainage outlet, heavy rainfall causes storm water to collect in low areas and flood streets and walk way. Rapid growth has decreased the open area available for percolation and rainwater and has greatly increased the runoff to low lying areas. In view of this prevailing condition , the drainage system in halhul city would have a new characteristic and development of new water drainage system is very necessary to drain excess water from streets, this study is conducted to design a storm drainage system for the center of halhul city. The result of the study show that the accumulation of storm water in the main streets in halhul city causes problems to the peoples, subsequently there is a big need for immediate steps for construction of the proposed storm water drainage system for the center of halhul city . gravity flow drainage sewer was proposed for the main street to minimize the cost of construction and excavations.