Effect of Land Use Change on Hydrological Characteristics of Surface Water Birjand Watershed

BARZGAR, S. (2012) Effect of Land Use Change on Hydrological Characteristics of Surface Water Birjand Watershed. Masters thesis, University of Zabol.

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The development of urban and residential areas in the margin of rivers and flood water plains bed without paying attention to hydrologic and hydraulic condition that is dominated on upper watershed and river increase will increase the danger of flood water. Therefore, flood water study for planning, optimum exploitation and management of this natural event is one of the important problems in water resource management. Considering Iran geographic condition, locating in semi-arid and arid climate, gaining adequate data seems necessary. Therefore, in this ground different models for flood water resembling, is presented that Hydrologic model HEC – HMS is the most applying one. On the other hand, having information and adequate data in this regards can increase accuracy in the implementation of plans. This study proceeds to investigate the land use change and its effects on flood water incidence in Birjand watershed, located in the east of the country, in area of 57.16 KM2 , in geographic limit 13´º 51to 19´º 51of east longitude and 32 º 46 ´ to º 53´ 32of north latitude by using Hydrologic model HEC-HMS and geographic information system. This research tried to study land set satellite images, aerial photos, and the rate of land use changes during 1161, 1197 and 2111 in this watershed to determine the effects of this use change on flood water. So, in the first stage, satellite images were interpreted and aerial photos were proceed. Also land use changes of watershed was specified and the amount of soil’s CN was calculated. Then, with the help of HEC_ HMS, flood water rain phenomenon was resembled in this watershed and the amount of flood water peak discharge with different returns period in every period obtained. Finally watershed flood hydrographic was estimated. SPSS software was used for analyzing the data. The results showed that with increase of urban impenetrable levels in the study area, discharge rate of flood water peak and run off volume has had 44.474 increase.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Land use change, climax discharge, remote sensing, HEC – HMS model, Birjand watershed
Subjects: S Agriculture > S Agriculture (General)
T Technology > TC Hydraulic engineering. Ocean engineering
Depositing User: admin admin1 admin2
Date Deposited: 24 Apr 2016 05:58
Last Modified: 24 Apr 2016 05:58
URI: http://eprints.uoz.ac.ir/id/eprint/499

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