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:: Volume 11, Issue 37 (7-2017) ::
jwmseir 2017, 11(37): 35-45 Back to browse issues page
Modeling and analysis of Trend in the hydrological regime of rivers (Case Study: Gorganrood River, Tamar hydrometric stations)
Saeed Farzin Dr , Forough Alizadeh sanami En.
Assistant Professor Semnan University
Abstract:   (1216 Views)

In this researcher for study trend hydrologic regime gorganarood river in Tamar hydrometric station, using of information 44 years Tamar hydrometric station in years 1348 until 1391, analyzed and modeling by GIS, ILWIS 2.1 and SMADA software. Then, physical characteristics in watershed, climate, temperature, rainfall, discharge process, floods and hydrographic took analyze. Results showed that the climate is changing into warm and dry, the effects can be cited reduced rainfall and increasing temperatures, increased rainfall intensity and increased peak discharges areas. On the other hand, check average discharges and annual discharges rates increase relatively weak trend this parameter is mentioned in the watershed that with the global climatic changes in the northern 30◦- latitude. Specified with examining flood Tamar watershed most floods related in the months of November, March, April and May frequency was respectively in the amount of 14, 12,12 and 12 during the period 10 years. In the end, it was found watershed unit hydrograph with analyzing several important floods recorded in Tamar station and the assessment Basin focus time and distribution pattern of rainfall respectively was the floods hydrograph with return period 2 until 2000 years.

Keywords: Floods, hydrograph, rainfall, discharge, Tamar hydrometric station.
Full-Text [PDF 1240 kb]   (479 Downloads)    
Type of Study: Research | Subject: Special
Received: 2015/08/11 | Accepted: 2017/02/20 | Published: 2017/06/28
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Farzin S, Alizadeh sanami F. Modeling and analysis of Trend in the hydrological regime of rivers (Case Study: Gorganrood River, Tamar hydrometric stations). jwmseir. 2017; 11 (37) :35-45
URL: http://jwmsei.ir/article-1-512-en.html

Volume 11, Issue 37 (7-2017) Back to browse issues page
مجله علوم ومهندسی آبخیزداری ایران Iranian Journal of Watershed Management Science and Engineering
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