نتایج جستجو برای: watershed models

تعداد نتایج: 922228  

Journal: :Journal of environmental quality 2014
James E Almendinger Marylee S Murphy Jason S Ulrich

For two watersheds in the northern Midwest United States, we show that landscape depressions have a significant impact on watershed hydrology and sediment yields and that the Soil and Water Assessment Tool (SWAT) has appropriate features to simulate these depressions. In our SWAT models of the Willow River in Wisconsin and the Sunrise River in Minnesota, we used Pond and Wetland features to cap...

Journal: :Water 2023

Ecological flow (E-flow) determination is an essential component of stream management and the preservation aquatic ecosystems within a watershed. E-flow should be determined while considering overall status watershed, including hydrological cycle, hydraulic facility operation, ecology. The purpose this study to determine by watershed through coupled modeling with SWAT PHABSIM. was calibrated en...

2002
Layne T. Watson Vinod K. Lohani David F. Kibler Randel L. Dymond Naren Ramakrishnan Clifford A. Shaffer

This paper describes a new computing paradigm known as a problem solving environment ~PSE!, explores the role this new paradigm might play in watershed management and land use change analysis, and compares PSEs to similar technologies such as decision support systems and geographic information systems. A prototypical watershed management PSE organizes and unifies the diverse collection of softw...

2017
Camille Couprie Leo Grady Laurent Najman Hugues Talbot

In this work, we extend a common framework for graph-based image segmentation that includes the graph cuts, random walker, and shortest path optimization algorithms. Viewing an image as a weighted graph, these algorithms can be expressed by means of a common energy function with differing choices of a parameter q acting as an exponent on the differences between neighboring nodes. Introducing a ...

ژورنال: علوم آب و خاک 2006
شمس الله ایوبی, , محسن حسین علیزاده, ,

Conventional soil survey methods for soils within the watersheds in Iran require a significant budget with many soil surveyors and much time. Additionally, no accurate and reliable information exists on the spatial variability of superface soil parameters in order to predict the soil loss by different models (RUSLE, PISAC, EUPOSEM, MORGAN). Also information on planning and management activities...

شمس الله ایوبی, , محسن حسین علیزاده, ,

Conventional soil survey methods for soils within the watersheds in Iran require a significant budget with many soil surveyors and much time. Additionally, no accurate and reliable information exists on the spatial variability of superface soil parameters in order to predict the soil loss by different models (RUSLE, PISAC, EUPOSEM, MORGAN). Also information on planning and management activities...

Journal: :رخساره های رسوبی 0
مهدی رضا پورسلطانی مصطفی معینی صالح

no-bahar watershed is located, south of khorasan razavi province. geologically, the study area is a part of central iran zone. the rock units are late mesozoic and cenozoic in age in this watershed. no-babhar watershed includes several channels, which among them, only two main channels, motr-abad and solh-abad, have been studied. these rivers are mostly, braided channel in style, with high grad...

سیف اله امین, , عبدالمجید غفوری روز بهانی, ,

Prediction of watershed responses and simulation of runoff rate and volume are required for design purposes in most water resources projects. For this purpose, different hydrologic methods and events based on continuous hydrologic mathematical models are applied. In this research, a continuous hydrologic model, Stanford Watershed Model-IV (SWM-IV) is used for simulation of annual and monthly vo...

Journal: Desert 2017

Hydrological processes and their spatial distribution directly are relevant to climate, topography, geology, and land use in the watershed. Therefore, use of a model whit integrity and high performance for simulating the process in deferent watersheds is very important. In this study was assessment performance of semi-distributed SWAT model in simulating hydrology processes in three watersheds ...

2010
Misgana Muleta

Comprehensive environmental models such as the Soil and Water Assessment Tool (SWAT) are becoming an integral part of decision making processes for effective planning and management of natural resources. Before their use as decision making aid, however, models must be properly evaluated to improve their prediction accuracy and reduce the likelihood of making decisions that could lead to undesir...

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