Evaluation the Efficiency of MUSLE Model in Sediment Load Estimation Resulting from Individual Rain Events in Doviraj River Sub-Basins, Ilam Province

Authors

  • fathizad, hassan 1- M.Sc. Graduate of Combating Desertification, Faculty of Agriculture, Ilam University, Ilam, Iran
  • karimi, haji Associate Professor, Agriculture Faculty, Ilam University, Iran.
Abstract:

Most of our country is located in arid and semiarid climate which have high soil erosion and sediment production, therefore, the study of soil erosion and sediment yield and also evaluation of the effective factors on sediment production are very important in proper management of a watershed. The aim of present study is the efficiency evaluation of MUSLE model in sediment estimation in the storm scale and also its modeling based on storm and runoff characteristics in four sub-basins of Doviraj River watershed in Ilam Province, which finally an optimized model is given for estimation of sediment resulted from the storm. Two storms in different dates (2012.11.22 and 2013.1.30) are used in this research. Results indicate appropriate correspondence in calibration stage between the observed and estimated sediment yield in four sub-basins. But, in validation stage, a high difference between observation and estimation in 1, 2 and 3 sub-basins was observed compared to the 4th sub-basin. The reason of inefficiency of the model in validation stage is related to the vastness of sub-basins. In order to present the appropriate model of the whole area the regression relation has been used, in which the power of runoff factor changed from 0.56 to 0.34, which has a high correlation coefficient. In this case if the other sub-basins of Doviraj watershed have similar vegetation cover, physiography and geology conditions, the modified MUSLE model can be used.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Determination of the Best Model to Estimate Suspended Sediment Load in Zaremrood River, Mazandaran Province

Extended abstract 1- Introduction The phenomena of erosion, sediment transport, and sedimentations have tremendously destructive effects on the environment and hydraulics structures. In general, the sediment transportation depends on river discharges, but the proposed equations inherited serious errors.  The estimation of suspended sediment load (SSL) is one of the most important factors in r...

full text

Estimation of the suspended sediment load in rivers with different hydrological methods (case study: Siahrood river in Mazandaran)

In a watershed, sediment arises due to the erosion and some factors such as pastures destruction,change users, no reasonable cultivation. That causes problems such as sedimentation in reservoirs andreduces their useful volume, reducing water quality in agricultural consumption; reduce the efficiencyof hydraulic structures and some other environmental problems. Changes in sediment load in a rive...

full text

Estimation of dynamic load of mercury in a river with BASINS-HSPF model

Purpose Mercury (Hg) is a naturally occurring element and mately 80% of the anthropogenic sources of Hg are emissions of elemental Hg to air, primarily from fossil fuel combustion, mining, smelting, chlor-alkali plants, and from incineration of solid wastes (Hamasaki et al. 1995; Stein et al. 1996). Another 15% of anthropogenic Hg loading to the land is the result of direct application of ferti...

full text

the role of russia in transmission of energy from central asia and caucuses to european union

پس ازفروپاشی شوروی،رشد منابع نفت و گاز، آسیای میانه و قفقاز را در یک بازی ژئوپلتیکی انرژی قرار داده است. با در نظر گرفتن این منابع هیدروکربنی، این منطقه به یک میدانجنگ و رقابت تجاری برای بازی های ژئوپلتیکی قدرت های بزرگ جهانی تبدیل شده است. روسیه منطقه را به عنوان حیات خلوت خود تلقی نموده و علاقمند به حفظ حضورش می باشد تا همانند گذشته گاز طبیعی را به وسیله خط لوله مرکزی دریافت و به عنوان یک واس...

15 صفحه اول

Presenting a New Approach to Increase the Efficiency of the Sediment Rating Curve Model in Estimating Suspended Sediment Load in Watersheds (Case Study: Mahabad-Chai River, Lake Urmia Basin, West Azarbayejan Province, Iran)

  The estimation of the correct amount of suspended sediment has an important role in the optimal design of water structures, erosion studies and water quality studies. The sediment rating curve (SRC) is a conventional and well-known regression model. However, due to logarithmic transformations in calibrating this model, its estimated values ​​are often less than actual values. In the present s...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 3  issue 3

pages  39- 54

publication date 2013-11

By following a journal you will be notified via email when a new issue of this journal is published.

Keywords

No Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023