Nitrate is one of the most complicated forms nitrogen found in aquatic surface systems, which results eutrophication water. During last few decades, due to agriculture and animal husbandry activities, as well urban development, a significant amount pollutants have accumulated Jajrood river northern Iran. In this research, we simulated nitrate load rural watershed assess outlet stream’s qualitat...

Accurate prediction of suspended sediment (SS) concentration is a difficult task for water resource projects. In recent years, methodologies such as artificial intelligence (AI) algorithms have been applied load estimation and these models provided efficient results. The present study investigates the abilities four distinct AI approaches estimating monthly SS in Roodak station on Jajrood River...

Quantifying the effect of non-point source pollution from different land use types (e.g., agricultural lands, pastures, orchards, and urban areas) on stream water quality is critical in determining extent type use. The relationship between surface as primary drinking patterns suburban areas with an accelerated pace industrial development progressive growth population has drawn much attention re...

estimation of pure runoff is a house virtually is complex and different methods of calculation have been proposed. modern methods of solving problems in river engineering and water homes and assess the flow method is used, is that the artificial network pattern of human brain neural network training process, while implementation of the internal relationships between the data and discover for ot...

introduction identification of active tectonic areas, especially in convergent zone are very important because of their potential risks. nowadays, there are several algorithms that are used for tectonic analysis; one of them is tecdem that is used in this research. in this study, using remote sensing techniques, geomorphometric analysis and fieldwork were conducted to analyze morphometric and g...

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population growth and urbanization increase the demand for developing new roads. heavy traffic of the east of tehran imposes high pressure on transportation. network of this city and old road of tehran-rudehen does not meet this need. therefore, constructing the new highway (tehran – pardis) in the east of tehran would be needed. but the new highway passes through protected area of jajrood an...