نتایج جستجو برای: soil conservation service scs

تعداد نتایج: 604939  

Journal: :Water 2023

This study presents a revised and calibrated Soil Conservation Service (SCS) curve number (CN) rainfall runoff model for predicting in Malaysia using new power correlation Ia = SL, where L represents the initial abstraction coefficient ratio. The traditional SCS-CN with proposed relation 0.2S is found to be unreliable, exhibits improved accuracy. emphasizes need design flood control infrastruct...

Journal: :Journal of forest science 2021

Simulation of the runoff-rainfall process in forest lands is essential for land management. In this research, a hydrologic modelling system (HEC-HMS) and artificial neural network (ANN) were applied to simulate rainfall-runoff (RRP) Kasilian watershed with an area 68 square kilometres. The HMS model was performed using secondary data rainfall discharge at climatology hydrometric stations, Soil ...

2008
James C.Y. Guo

Hydrologic Engineering, April __________________________________________________________________________________ DESIGN RAINFALL CURVE James C.Y. Guo, Professor, Civil Engineering, U. of Colorado at Denver. __________________________________________________________________________ Abstract To design urban storm water infrastructures, hydrologists apply the SCS Type I and II 24-hr rainfall distr...

2011
Lixin Chen Zhiqiang Zhang Zhandong Li Jianwu Tang Peter Caldwell Wenjuan Zhang

Key Laboratory Soil and Water Conservation and Desertification Combating, Ministry of Education, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, PR China College of Landscape Architecture and Ornamental Horticulture, Beijing Forestry University, Beijing 100083, PR China c The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA Raleigh ...

Journal: :International journal of engineering research and advanced technology 2023

Rainfall runoff modeling is one of the most complex hydrological due to involvement different watershed physical parameters. It essential for analysis response towards received precipitation under influence variables. As it a replica response, Rainfall-Runoff evaluate general characteristics total surface at catchment’s outlet. The main objective this study was prediction rainfall using Hydrolo...

Journal: :Journal of Geographical Sciences 2022

Since the implementation of Development Western Regions in 2000, a series major ecological construction projects have been implemented, leading to changes conditions and services western China. This study calculated amount ecosystem total region from 2000 2019, analyzed characteristics spatio-temporal variations services. A relevant analysis method was applied explore tradeoff synergy service. ...

     روش های استحصال آب باران از جمله روش های مدیریتی به منظور مقابله و سازگاری با شرایط کم آبی است. مبنای این روش ها، اختصاص سطوحی از زمین به منظور جمع آوری نزولات، ذخیره سازی و استفاده مجدد از آن ها برای اهداف طراحی در زمان مورد نیاز می باشد. ضرورت اصلی از اجرای این طرح، این است که در هر بارش نسبتاً شدیدی، شاهد هستیم که گرفتگی معابر و اختلال در خدمات شهری و خسارت به خانه ها اتفاق می افتد که لا...

ژورنال: علوم آب و خاک 2012
علیرضا واعظی, , محمد عباسی, ,

The Soil Conservation Service Curve Number (SCS-CN) method is widely used for predicting direct runoff from rainfall events. The ratio of initial abstraction (λ=Ia/S) to maximum potential retention (S) was assumed in its original development to be equal to 0.2 (λ=Ia/S=0.2) in SCS-CN method. Application of the initial abstraction ratio equal to 0.2 out of the area where it has been developed may...

Journal: :Land 2021

Suburban growth and its impacts on surface runoff were investigated using the soil conservation service curve number (SCS-CN) model, compared with integrated advanced remote sensing geographic information system (GIS)-based approach, over South Kingston, Rhode Island, USA. This study analyzed employed supervised classification method four Landsat images from 1994, 2004, 2014, 2020 to detect lan...

2004
Swagata “Ban” Banerjee Steven W. Martin Roland K. Roberts James A. Larson Robert J. Hogan Jason L. Johnson Kenneth W. Paxton Jeanne M. Reeves

The Natural Resources Conservation Service (NRCS) defines conservation tillage as a tillage system that leaves enough crop residue to adequately protect the soil from erosion throughout the year. The percent of cover required varies by field according to soil type, slope, crop rotation, winter cover crops used and other factors (NRCS website). Conservation tillage in general and notill practice...

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