Evaluation of Water Extraction Indices Using Landsat Satellite Images (Case Study: Gamasiab River of Kermanshah)

technical and legal parameters for determination of river boundary,( case study haraz river)

چکیده با توسعه شهر نشینی و دخل و تصرف غیر مجاز در حریم رودخانه ها خسارات زیادی به رودخانه و محیط زیست اطراف آن وارده می شود. در حال حاضر بر اساس آئین نامه اصلاح شده بستر و حریم رودخانه ها، حریم کمی رودخانه که بلافاصله پس از بستر قرار می گیرد از 1 تا20 متر از منتهی الیه طرفین بستر رودخانه تعیین، که مقدار دقیق آن در هر بازه از رودخانه مشخص نیست. در کشورهای دیگر روشهای متفاوتی من جمله: درصد ریسک...

Assessment of water quality of Gamasiab River using BMWP and ASPT Indices

The rivers are under threat by numerous pollutions and their quality assessment is a need. Water quality of the Gamasiab River in Kermanshah Province was assessed using biological indices (BMWP and ASPT method). Six stations were selected and macro invertebrates were collected by surber sampler from July 2013 to May 2014. In this study, 11 families of the macro invertebrates from 10 orders were...

Mapping soil salinity using Landsat 8 images for land evaluation: A Case Study of Saveh

Introduction: As a valuable asset that play a key role in the environment, natural resources, and the production of agricultural products, soil provided an appropriate ground for plant growth and vegetation development. Therefore, any disregard to the preservation of such a valuable capital may result in food shortages, soil erosion, and degradation of natural resources. From among different i...

Evaluation of base flow separation methods for determining water extraction (Case study: Gorganroud River Basin)

Study of the morphological changes and meander pattern of the Zohre River using satellite images

Erosion and sedimentation that will lead to morphological changes in rivers are found in alluvial rivers. Morphological changes in rivers can cause numerous problems, so studying the shape of alluvial rivers in morphology is very important in morphology science. In this study, morphology changes of the Zohreh River in the Hendijan plain, for a length of about 23 km between latitudes 30´ 49° and...

Extraction of Water Body Based on LandSat TM5 Imagery - A Case Study in the Yangtze River

A improved method named vegetation normalized difference water index (VNDWI) has been proposed in this paper based on NEW of Xiao Yun-fang(2010), which uses Band 1 and Band 7 and the normalized difference vegetation index (NDVI) in TM5 imagery to construct the VNDWI. This method has been tested in the Yangtze River Basin, and compares the results with other methods is the best. Due to the refle...