watershed Articles
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Estimating soil loss from two coastal watersheds in Puerto Rico with RUSLE
The loss of topsoil from the landscape increases sediment loading to adjacent aquatic systems, which may be transported further downstream. Increased sediment loading to downstream ecosystems such as estuaries can negatively impact these environments. This research compares the sediment loss from two watersheds [Jobos Bay (JB) and Rio Espiritu Santo (RES) watersheds] on the island of Puerto Rico. ...
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Comparison of different targeting methods for watershed management practices implementation in Taleghan dam watershed, Iran
Soil erosion and sediment control is important in watersheds with planned dam construction. For an efficient implementation of watershed management practices, identification of critical areas is vital. Many studies have made an effort to identify and prioritize critical sub-watersheds. But very limited studies have been conducted to rank sub-watersheds in terms of their sediment yield ...
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The challenge of documenting water quality benefits of conservation practices: a review of USDA-ARS's conservation effects assessment project watershed studies
The Conservation Effects Assessment Project was established to quantify water quality benefits of conservation practices supported by the U.S. Department of Agriculture (USDA). In 2004, watershed assessment studies were begun in fourteen agricultural watersheds with varying cropping systems, landscapes, climate, and water quality concerns. This paper reviews USDA Agricultural Research Service ...
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Social and biophysical impacts of watershed development programmes: experiences from a micro-watershed area in India
Rainwater conservation and soil erosion prevention are vital for the economic and financial sustainability of dry land agriculture. An integrated watershed development programme is thus a means of achieving these goals. Presently, integrated watershed management is receiving worldwide recognition as an effective model for watershed planning. A watershed is considered the basic geographical ...
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Impact of critical source area on AnnAGNPS simulation
The objective of this paper is to study the impact of critical source area (CSA) within an Annualized AGricultural Non-Point Source pollution models (AnnAGNPS) simulation at medium- large watershed scale. The impact of CSA on terrain attributes is examined by comparing six sets of CSA (0.5, 1, 2, 4, 6 and 8 km2). The accuracy of AnnAGNPS stimulation on runoff, sediment and nutrient loads on these ...
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Application of the SWAT model to the Xiangjiang river watershed in subtropical central China
The Soil and Water Assessment Tool (SWAT) model was applied to simulate the water balance in the Xiangjiang river watershed for current and planning scenarios of land uses. The model was first calibrated for the period from 1998 to 2002 and then validated for the period from 2003 to 2007 using the observed stream flow data from four monitoring gages within the watershed. The determination ...
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Application of MUSLE for the prediction of phosphorus losses
Soil erosion in forestlands affects not only land productivity but also the water body down stream. The Universal Soil Loss Equation (USLE) has been applied broadly for the prediction of soil loss from upland fields. However, there are few reports concerning the prediction of nutrient (P) losses based on the USLE and its versions. The present study was conducted to evaluate the applicability of ...
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India’s Watershed Development Boosts Food Security, Improves Livelihoods
India struggles with water scarcity, a problem that poses especially huge implications for the country’s food security and rural livelihoods. The country has long-battled its scarcity issues through Watershed Development, a participatory approach to improve water management through afforestation and reforestation, sustainable land management, soil and water conservation, water-harvesting ...
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Forests for water: Exploring payments for watershed services in the U.S. south
The forested watersheds of the southern United States provide a number of benefits—including water flow regulation, flood control, water purification, erosion control, and freshwater supply—to the region’s citizens, communities, and businesses. The loss and degradation of forests can reduce their ability to provide these watershed-related ecosystem services. Payments for ...
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Application of spatial Markov chains to the analysis of the temporal–spatial evolution of soil erosion
Soil and water conservation in the Three Gorges Reservoir Area of China is important, and soil erosion is a significant issue. In the present study, spatial Markov chains were applied to explore the impacts of the regional context on soil erosion in the Xiangxi River watershed, and Thematic Mapper remote sensing data from 1999 and 2007 were employed. The results indicated that the observed ...
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A New Strategy to Improve Water Quality—One Targeted Watershed at a Time
Water quality in the United States remains a major environmental and policy challenge. Water pollution is also a growing and serious problem across much of the world. Tackling water quality problems, particularly from diffuse sources such as agricultural farm fields, is a substantial challenge and much can be learned from the U.S. experience. More than 15,000 streams, rivers, and lakes in the ...
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Water erosion and connectivity analysis during a year with high precipitations in a watershed of Argentina
Soil erosion is a global concern because of its consequences for the environment and the economy of countries. In the Argentine Pampas Region, soil erosion process is a priority issue, although there is little information about sediment concentration (SC) in agricultural catchments. The study aimed at assessing the factors that have a major influence on SC and discussing the dynamics of ...
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Daily runoff prediction using the linear and non-linear models
Runoff prediction, as a nonlinear and complex process, is essential for designing canals, water management and planning, flood control and predicting soil erosion. There are a number of techniques for runoff prediction based on the hydro-meteorological and geomorphological variables. In recent years, several soft computing techniques have been developed to predict runoff. There are some ...
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Watershed Development in India - Economic Valuation and Adaptation Considerations
Watershed development, an ecosystem-based approach for development of rain-fed regions in India, is gaining traction and political support, but how is it contributing to poverty reduction, food security, and climate change adaptation? This paper examines how economic valuation can improve our understanding of watershed development and how to overcome challenges related to data collection, valuing ...
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Retaining wall for Riverbank Protection (Rio Guayabo, Panama) case study
Background: The strong currents of the famous rebel Guayabo River at it’s highest point in the Anton Valley watershed almost destroyed a large area of privately owned land. Constant changes in the water levels has eroded the banks, causing ancient trees to fall helpless into the river’s grasp. The construction of luxury residences “Los Portales” was suspended as the fight ...
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ARMORMAX® Provides Drop Structure Protection at the Carlota Copper Mine case study
Water is a precious resource for the Carlota Copper Mine in Globe, AZ, and environmental regulations necessitated zero discharge from mine operations to the nearby Pinto Creek watershed. Construction of new heap leach pads in 2008 dictated the need for a diversion channel to maintain the flow of Powers Gulch without introduction of any leach effluent-Velocities associated with critical and ...
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Project Holcim Cement New York - Cement Kiln Dust Landfill Closure - Case Study
Project: Holcim Cement Landfill Location: Catskill, NY Type: Cement, Kiln, Dust (CKD) Owner: Holcim Cement (SIX: HOLN) Engineer: Arcadis ClosureTurf Size: 54 acres HydroTurf Size: 300,000 sq.ft. Completed: 2015 – Phase I, 2016 – Phase II The Holcim Cement – CKD Landfill is a 46 acre final closure cover system project located in Catskill, NY. The project is an unlined ...
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Estimation and monitoring non-point source pollutant loads: an object-oriented hydro-information approach
Numerous hydrologic/water quality models of run-off and soil erosion have been coupled to Geographical Information System (GIS) to determine Non-Point Source (NPS) pollutants from watersheds. Hydrology and water-resource engineering rely on observations of environmental conditions and the accuracy of environmental data. This paper focuses on estimation and monitoring of NPS pollutant loads based ...
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Climate change adaptation in rural India: A green infrastructure approach
Water is a scarce resource in India, especially in the state of Maharashtra, where most rainfall is limited to the monsoon season from June through September. The Government of India has long promoted a Participatory Watershed Development (PWD) approach to deal with this scarcity, focusing on technical and social interventions to restore barren landscapes, boost agricultural production, and ...
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Project Crazy Horse Salinas California - Municipal Solid Waste Landfill Closure - Case Study
Project: Crazy Horse Landfill Location: Salinas, CA Type: Municipal Solid Waste Landfill Closure Owner: Salinas Valley Solid Waste Authority Engineer: Golder Associates ClosureTurf Size: 68 acres HydroTurf Size: 43,560 sq.ft. Completion: 2013 The Crazy Horse Landfill (CHLF), owned and maintained by the Salinas Valley Solid Waste Authority (SVSWA), had been in service for 75 years, ...
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