scholarly journals Avaliação de contribuição do reservatório de Movene na bacia hidrográfica do rio Umbeluzi em Moçambique

2021 ◽  
Vol 14 (6) ◽  
pp. 3622
Author(s):  
Pedro Francisco Notisso ◽  
Klebber Teodomiro Martins Formiga
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Management Strategies ◽  
Industrial Sector ◽  
Planning System ◽  
Reference Scenario ◽  
Weap Model ◽  
Unmet Demand ◽  
Cultural Ecological ◽  
Growth Scenario

A gestão dos recursos hídricos na bacia hidrográfica do rio Umbeluzi é uma questão fundamental devido ao agravamento de escassez de água nos centros urbanos e na agricultura que pode pôr em causa os valores socioculturais, ecológicos e econômicos. Torna-se ainda mais importante o fato de ser uma bacia internacional, cuja demanda por água tem aumentando em função de expansão agrícola e crescimento populacional. O estudo avaliou a contribuição do novo reservatório de Movene e novas regras de prioridade na alocação de água superficial para atender às diferentes necessidades usando o modelo WaterEvaluation and Planning System – WEAP. O modelo foi validado no período 2005-2011 apresentando o NSE de 0,69 e Bias de 5,2% no volume do reservatório e 2005 com NSE de 6,7 e Bias de 6,0% na vazão. Os resultados mostram menor contribuição do reservatório de Movene, a demanda não atendida no abastecimento doméstico passou de 33,6 hm3 para 10,1 hm3 no cenário de Referência e de 57,3 hm3 para 19,9 hm3 no cenário Maior Crescimento em 2040. Considerando o mesmo ano, a demanda não atendida na agricultura caiu de 12,9 hm3 para 4,1 hm3 e de 22 hm3 para 10,3 hm3 nos cenários de Referência e de Maior Crescimento. No sector industrial apenas o cenário Maior Crescimento apresenta demanda não atendida, tendo saído de 7,4 hm3 para 0,3 hm3 em 2040. Esses resultados enfatizam a necessidade de implementação de estratégias de gestão de lado de demanda para minimizar os impactos de escassez de água.   Contribution assessment of the Movene reservoir in the Umbeluzi river basin in Mozambique A B S T R A C TThe management of water resources in the Umbeluzi River basin is an important issue due to the worsening of water scarcity in urban centres and in agriculture, which can jeopardize socio-cultural, ecological and economic values. Even more important is the fact that it is an international basin, whose demand for water has been increasing due to agricultural expansion and population growth. The study evaluated the contribution of the new Movene reservoir and new rules of priority in the allocation of surface water to meet different needs usingWater Evaluation And Planning (WEAP) model. WEAP modelwas validated from 2005 to 2011 with NSE of 0.69 and Bias of 5.2% in the volume of the reservoir and 2005 with an NSE of 6.7 and Bias of 6.0% in the flow. The results demonstrate a lower contribution of the Movene reservoir, the unmet demand in domestic supply went from 33.6 hm3to 10.1 hm3 in the Reference scenario and from 57.3 hm3to 19.9 hm3 in the Reference scenario Higher Growth scenario in 2040. Considering the same year, unmet demand in agriculture fell from 12.9 hm3to 4.1 hm3 and from 22 hm3to 10.3 hm3 in the Reference and Higher Growth scenarios. In the industrial sector, only the Highest Growth scenario has unmet demand, having gone from 7.4 hm3to 0.3 hm3 in 2040. These results emphasize the need to implement demand-side management strategies to minimize the impacts of water scarcity.Keywords: water resources, water demand, Umbeluziriver, WEAP model.

scholarly journals Avaliação de Alocação de Água na Bacia Hidrográfica do Rio Inhanombe, Moçambique

2020 ◽  
Vol 13 (4) ◽  
pp. 1870
Author(s):  
Pedro Francisco Notisso ◽  
Klebber Teodomiro Martins Formiga
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Allocation ◽  
High Growth ◽  
Environmental Water ◽  
Planning System ◽  
Reference Scenario ◽  
Resources Management ◽  
Irrigated Area ◽  
Water Evaluation And Planning

A satisfação das necessidades hídricas humanas e ambientais é um tema que tem merecido atenção no âmbito da gestão e planejamento dos recursos hídricos no mundo. As incertezas sobre as possiblidades de atender as necessidades de água futuras na bacia do rio Inhanombe motivaram a realização deste trabalho. Este artigo tem como objetivo avaliar a capacidade de satisfação das necessidades de água, através da aplicação do WEAP (Water Evaluation And Planning System). Simularam-se três cenários: o cenário de referência que corresponde a exploração atual dos recursos hídricos; dois cenários de impacto: Médio e Alto crescimento que correspondem à expansão da área irrigada e do crescimento populacional entre 2019 e 2040. Os resultados obtidos demonstram a incapacidade do sistema de satisfazer as necessidades futuras nos cenários de Médio e Alto crescimento com níveis baixos de garantias mensais e muitas falhas no fornecimento. Water Allocation Assessment in the Inhanombe river basin, Mozambique A B S T R A C TMeeting human and environmental water needs is a topic that has deserved attention in the area of water resources management and planning in the world. Uncertainties about the possibilities of meeting future water needs in the Inhanombe river basin motivated this work. This article aims to evaluate the ability to meet water needs through the application of WEAP. Three scenarios were simulated: the reference scenario that corresponds to the current exploitation of water resources; two impact scenarios: Medium and High growth corresponding to the expansion of irrigated area and population growth between 2019 and 2040. The results show the system's inability to meet future needs in medium and high growth scenarios with low monthly guarantee levels and many supply failures.Keywords: Water demand, river basin, Inhanombe river, WEAP. 

scholarly journals Inter-region planning and analysis of water resources by using WEAP model Seybouse (Annaba) and Coastal East of Constantine (El-Taref)

2017 ◽  
Vol 33 (1) ◽  
pp. 115-122 ◽  
Author(s):  
Sarra Mansouri ◽  
Lahbassi Ouerdachi ◽  
Mohamed Remaoun
Keyword(s):  
Water Resources ◽  
Water Demand ◽  
Supply And Demand ◽  
Management Strategies ◽  
Ecological Sustainability ◽  
Actual System ◽  
Weap Model ◽  
System Use ◽  
Key Factor ◽  
Response To Water

Abstract Water is seen as key factor for development. Its scarcity raises concerns at all scales. In regards to water resources, Annaba and El-Taref are intimately connected, the different activities (groundwater and superficial), focused on increasing supply, have been considered as a response to water demand. The actual system use of water resources is not able to sustain water needs that are more and more growing in different expansion sectors. Consequently, a strategy should therefore be sought to integrate the various sectoral needs in available water resources in order to reach the economic and ecological sustainability. We will try to respond to this problem by use of Water Evaluation and Planning (WEAP) model. This study is the first attempt to estimate water demand and analysis of multiple and competing uses of hydro-system in Seybouse’s Wadi basin and to make comparison with proposed water storage estimates. This model was applied according to five different scenarios which reflect the best and worst conditions of the supply and demand, not only to evaluate water demand deficit, but also to help planners to the alternative management. The model stimulation showed that the area study is sensitive to a serious water scarcity by 2030. It is possible to observe an improvement with integration of other management strategies for a best operating system.

scholarly journals A Conceptual Socio-Hydrogeological Model Applied to Sustainable Water Management. Case Study of the Valdivia River Basin, Southwestern Ecuador

2021 ◽  
Vol 16 (7) ◽  
pp. 1275-1285
Author(s):  
Paúl Carrión-Mero ◽  
Fernando Morante-Carballo ◽  
Valery Vargas-Ormaza ◽  
Boris Apolo-Masache ◽  
María Jaya-Montalvo
Keyword(s):  
Water Resources ◽  
Conceptual Model ◽  
River Basin ◽  
Swot Analysis ◽  
Management Strategies ◽  
Water System ◽  
Climatic Conditions ◽  
Hydrogeological Model ◽  
Aquifer System ◽  
Management Case Study

The scientific community has a growing interest in understanding the interaction of the human-water system in water resource models. In Santa Elena (Ecuador), Valdivia, San Pedro, Sinchal, Barcelona and Carrizal communities are located in a semi-arid area, making the water supply a critical problem for local communities. In addition to the climatic conditions of the sector, the main problem is the weak participation in the integral management of the groundwater resource by the stakeholders involved. Specifically, there is evidence of a lack of ancestral-technical knowledge in management strategies and the fact that the demand for water for agriculture, tourism, and their basic needs exceed the sustainable supply capacity. The present study assesses the natural and anthropic conditions of the middle and lower basin of the Valdivia river through a socio-hydrogeological conceptual model of the river-aquifer system to develop productive activities in an environment of sustainability. The study methodology consists of four phases: i) river basin data analysis, ii) hydrogeological studies, iii) application of the Participatory Action Research (PAR) and Strengths-Weaknesses-Opportunities-Threats (SWOT) analysis, and iv) conceptual model of the river-aquifer system. The results show that the socio-hydrogeological model of the Valdivia River basin has four systems: hydrogeological, ecological, economic, and social. In addition, the research detected problems present in the systems, such as droughts due to the influence of natural phenomena, aquifer overexploitation, lack of aquifer sustainability techniques, weak management and control of water resources, contamination of water sources and a lack of support from government agencies. The systems identified allow JAAPR-Valdivia to manage strategies to solve the problems detected in search of the sustainability of water resources.

Investigation and evaluation of agricultural water use in a least developed country – a case study in Koshi River basin, Nepal

Water Policy ◽  
2019 ◽  
Vol 21 (3) ◽  
pp. 658-675
Author(s):  
Bo Kong ◽  
Wei Deng ◽  
Qing Wang ◽  
Huan Yu
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Availability ◽  
Management Strategies ◽  
Developed Country ◽  
Agricultural Water Use ◽  
Agricultural Use ◽  
Koshi River Basin ◽  
Farming Households ◽  
Basin Area

Abstract Water availability plays a key role in securing agricultural production and sustaining the income of farming households. Nepal is one of the countries most dependent on agriculture; more than 80% of the population works in agriculture, contributing to 35% of its total gross domestic product (GDP). As one of the longest rivers in Nepal, Koshi River is one of the main water supplies for agricultural activities. In recent years, due to the population growth and the climate change, there has been increasing stress on the water resources in Koshi River basin. Therefore, a comprehensive investigation of water availability in the basin area is required, prior to an effective strategy for water resources allocation and management. In this study, we provide a quantitative assessment of available water resources in Koshi River basin and highlight the trend of water availability for agricultural use. Moreover, we discuss the potential water-related risks for farming households in the basin area. The contribution of this study is to provide the basis for efficient water management strategies in Koshi River basin.

scholarly journals Effects of Water-Management Strategies on Water Resources in the Pawcatuck River Basin, Southwestern Rhode Island and Southeastern Connecticut

Circular ◽  
2009 ◽  
Author(s):  
Robert F. Breault ◽  
Phillip J. Zarriello ◽  
Gardner C. Bent ◽  
John P. Masterson ◽  
Gregory E. Granato ◽  
...  
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Rhode Island ◽  
River Basin ◽  
Management Strategies

scholarly journals Testing of Water Evaluation and Planning (WEAP) model for water resources management in the Hron River basin

2021 ◽  
Vol 22 (1) ◽  
pp. 30-39
Author(s):  
Miroslav Kandera ◽  
Roman Výleta ◽  
Anna Liová ◽  
Zuzana Danáčová ◽  
ľubica Lovasová
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Resources Management ◽  
Weap Model ◽  
Resources Management ◽  
Water Evaluation And Planning

scholarly journals Water Resources Allocation Systems under Irrigation Expansion and Climate Change Scenario in Awash River Basin of Ethiopia

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1966 ◽  
Author(s):  
Mohammed Gedefaw ◽  
Hao Wang ◽  
Denghua Yan ◽  
Tianling Qin ◽  
Kun Wang ◽  
...  
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Scarcity ◽  
Optimal Allocation ◽  
Baseline Period ◽  
Economic Benefits ◽  
Change Scenario ◽  
Water Shortages ◽  
Weap Model ◽  
Awash River Basin

Rational allocation of water resources is very essential to cope with water scarcity. The optimal allocation of limited water resources is required for various purposes to achieve sustainable development. The Awash River Basin is currently faced with a scarcity of water due to increasing demands, urbanization, irrigation expansion, and variability of climates. The excessive abstraction of water resources in the basin without proper assessing of the available water resources contributed to water scarcity. This paper aimed to develop a water evaluation and planning (WEAP) model to allocate the water supplies to demanding sectors based on an economic parameter to maximize the economic benefits. The water demands, water shortages, and supply alternatives were analyzed under different scenarios. Three scenarios were developed, namely reference (1981–2016), medium-term development (2017–2030), and long-term development (2031–2050) future scenarios with the baseline period (1980). The results of this study showed that the total quantity of water needed to meet the irrigation demands of all the stations was 306.96 MCM from 1980 to 2016. Seasonally, March, April, May, and June require the maximum irrigation water demand. However, July, August, and September require minimum demand for water because of the rainy season. The seasonal unmet demand is observed in all months, which ranged from 6 × 106 m3 to 35.9 × 106 m3 in August and May respectively. The trend of streamflow in Melka Kuntre was a statistically significant increasing trend after 2008 (Z = 5.33) whereas the trends in other gauge stations showed a relatively decreasing trend. The results also showed that future water consumption would greatly increase in the Awash River Basin. The prevention of future water shortages requires the implementation of water-saving measures and the use of new water supply technologies. The findings of this study will serve as a reference for water resources managers and policy and decision makers.

scholarly journals Estimation of Water Budget Components of the Sakarya River Basin by Using the WEAP-PGM Model

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 271 ◽  
Author(s):  
Salim Yaykiran ◽  
Gokhan Cuceloglu ◽  
Alpaslan Ekdal
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
River Basin ◽  
Water Budget ◽  
Industrial Development ◽  
Agricultural Land ◽  
Crop Yields ◽  
Model Performance ◽  
Planning System ◽  
Sakarya River

The use of water resources has increased with rapid population growth, industrial development, and agricultural activities. Besides, the problem might increase with the potential climate change impacts on water quantity. Thus, sustainable use of water resources becomes crucial. Modeling studies provide scientific support to the analysis of water resource problems and develop strategies for current and potential problems for the sustainable management of water resources. In this study, WEAP-PGM (Water Evaluation and Planning System—Plant Growth Model) was applied to the Sakarya River Basin in Turkey, where almost 50% of the area is agricultural land. The main goals in the study are compiling/integrating available data from different sources in a data-scarce region for hydrological models, and estimating the water budget components of Sakarya River Basin on an annual basis as well as investigating the applicability of WEAP-PGM. General model performance ratings indicated that model simulations represent streamflow variations at acceptable levels. Model results revealed that, runoff is 4747 million m3, flow to groundwater is 3065 million m3 and evapotranspiration is 23,011 million m3. This model setup can be used as a baseline for calculating the crop yields under climate change in the context of water-food-energy nexus in the further studies.

scholarly journals Integration of a Network-Based and an Economy-Wide Water Model to Support Decision Making on Water Resources Planning and Management in Northeastern Brazil

2021 ◽  
Vol 3 ◽  
Author(s):  
Márcia M. G. Alcoforado de Moraes ◽  
Gerald N. Souza da Silva ◽  
Marcelo Pereira da Cunha ◽  
Nilena B. M. Dias ◽  
Terezinha F. Cardoso ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Water Resources ◽  
Water Use ◽  
Industrial Sector ◽  
Integrated Modeling ◽  
Northeastern Brazil ◽  
Water Model ◽  
Economic Losses ◽  
Reference Scenario ◽  
Trade Offs

Allocation of Water Resources at the basin level is a critical issue for economic growth as well as for environmental sustainability. This study integrates network-based optimization with an Input-Output model, made available through a Spatial Decision Support System (HEAL), to support design and evaluation of water allocation policies. The innovative platform was applied to a case study using four-interlinked hydrographic basins in Northeastern of Brazil. The integrated modeling was able to measure broader socioeconomic impacts of decisions on reservoir volumes and water allocations at basin level, through indicators in a sectoral and regional scale, including ones associated with Sustainable Development Goals, such as the Water Use Efficiency (WUE) indicator. Results of the trade-offs between two scenarios, representative of the limits of performance of regulatory water instruments, were generated using the integrated modeling. They were compared with the Reference scenario for the base year (2011) and show that the economic sector most negatively affected by the regulatory instrument use is the industrial sector. Furthermore, the sugar and ethanol industry, main water users in the industrial sector (93.1% of the sector's water use) and less efficient (WUE 1.47 US$/m3 vs. 30.70 US$/m3 average of the sector) in the base year, maintain their percentage share of water use in the sector and even slightly expand it (93.2%), with slight efficiency gains (+2.3%). On the other hand, non-water-intensive industries, have their shares reduced (from 6.9 to 6.8%) and lose efficiency (−9.5%). Results of the same trade-offs by region showed that the largest proportional economic losses occur in the drier areas, damaging the economy, especially in the most industrialized municipalities with the highest GDPs. Integrated economic modeling can expand aspects involved in water security issues, assisting management by introducing socioeconomic impact measures, in a broader scale, associated with allocation decisions. Hydrological allocation criteria cannot distinguish between user efficiency and which economic sectors are using how much water. This results in economic and social losses. In water-scarce regions and with growing transfer needs, such as in the basins studied, adequate incentives, through management instruments designed based on economic theory, are essential to promote sustainable development.

Sign in / Sign up

Export Citation Format

Share Document