A SURVEY OF GROUNDWATER LEVEL RISE AND RECOMMENDATIONS FOR HIGH WATER TABLE MITIGATION FOR THE CITY OF GULISTAN, REPUBLIC OF UZBEKISTAN

摘要

The city of Gulistan covers 1160 hectares (ha). It is situated on the third terrace of the Syrdarya River flood plain between the Dustlik and K-3 channels. There is a dense system of irrigation and collector return flow networks in the city; the total length of the irrigation canal network, for example, is 101.5 km.. Water for municipal use is supplied by a mains water pipeline. Leakage from the canals and water distribution system has created high water table conditions. Reclamation of lands within the city limits is accomplished by a vertical drainage system consisting of 50 wells each with a mean design discharge of 40 liters per second. The wells are about 30 years old and only 42 are operational. Major rehabilitation of the wells and pumping system is required if the high water table is to be adequately managed.