A water balance modelling approach to optimising the use of water resources in ephemeral sand rivers

Love, David W.; Zaag, Pieter van der; Uhlenbrook, Stefan; Owen, Richard

doi:10.1002/rra.1408

Cited by 25 publications

(30 citation statements)

References 34 publications

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“…There is need for development and implementation of agronomic and water management strategies in the scheme to ensure sustainable crop production. The use of surface water to complement the groundwater source should be considered where it can be used as a dilution or a pre-planting flushing of salts to beyond the root zone [5,20,48,49]. Thus, integration of the surface and groundwater sources could help reduce the problem of salinity in the scheme.…”

Section: Discussionmentioning

confidence: 99%

“…The application of models to simulate the irrigation requirements and crop production potential under the conditions in the scheme is also required to inform crop production and policy on management of existing schemes and development of new ones in dry areas [18,27,49]. It may also be important to analyze the temporal variations in both water and soil characteristics in the scheme as reported in other studies [1,23].…”

Section: Discussionmentioning

confidence: 99%

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An Assessment of Irrigation Water Quality and Selected Soil Parameters at Mutema Irrigation Scheme, Zimbabwe

Chemura¹,

Kutywayo²,

Chagwesha³

et al. 2014

JWARP

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Soil salinity and sodicity are major factors limiting agricultural productivity in irrigation schemes located in semi-arid areas. A study was conducted to assess the quality of irrigation water used in Mutema Irrigation Scheme located in southeast Zimbabwe to understand how irrigation water quality is related to the chemical quality of soils in the scheme. Irrigation water samples were collected from groundwater and surface sources in 2012 and their hydrochemistry determined while soil samples were collected from irrigated and non-irrigated parts of the scheme in 2006 and 2012 and analysed for selected chemical properties. The results indicated that the groundwater had high concentrations of Na + (4.35 mg/l), Mg 2+ (4.75 mg/l), Cl − (3.6 mg/l) and Electrical Conductivity (EC) (1729 Msm/cm) compared to the surface irrigation water source which had 0.72 mg/l Na + , 2.25 mg/l Mg 2+ , 0.78 mg/l Cl − and 594 Msm/cm EC. The soils in the scheme had higher levels of pH, Sodium Adsorption Ratio (SAR), Exchangeable Sodium Percentage (ESP) and EC which in some blocks exceeded the threshold requirements for cropping. It was found that pH, SAR and ESP were significantly higher (p < 0.05) in irrigated blocks compared to non-irrigated areas of the scheme, indicating an influence of irrigation water on soils characteristics in irrigated plots. Mg 2+ and Ca 2+ in the soils positively correlated with Na + (r 2 = 0.67 and r 2 = 0.57 respectively). The results indicated that the groundwater presents a chloride hazard to the soils in the scheme which are becoming saline and therefore require proper management and choice of crops to sustain crop production.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

An Assessment of Irrigation Water Quality and Selected Soil Parameters at Mutema Irrigation Scheme, Zimbabwe

Chemura¹,

Kutywayo²,

Chagwesha³

et al. 2014

JWARP

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“…Their paper is a chapter in Masih's PhD thesis (Masih, 2011). Love, van der Zaag, Uhlenbrook, and Owen (2011) use a water balance model to determine the potential for expanding irrigation and to explore water allocation options in the Limpopo basin, Zimbabwe. Their model includes both surface and groundwater resources to explore conjunctive use of surface reservoirs and alluvial aquifers.…”

Section: Notementioning

confidence: 99%

Challenges in assessing the regional feasibility of local water storage

Nikkels

Oel

Meinke

et al. 2019

Water International

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The regional effects of local water storage are largely unknown. This study identifies, categorizes and discusses the challenges in assessing the potential of local water storage. These are illustrated using a structured method applied to a Dutch case. We conclude that the focus must shift from storage 'potential' (the quantity of water that can be stored) to storage 'feasibility', which depends on exploitability, purpose and interactions between storage alternatives. Spatial and temporal scale also influence feasibility. Finally, farmers' investment preferences are a factor, though these are shrouded in uncertainty. This overview is a first step towards improving storage assessment tools and processes.

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“…Além disso, o processo de sedimentação a jusante da barragem pode ser drasticamente reduzido. (LOVE et al, 2011; SOUZA e ALMEIDA, 2015).Nessa perspectiva, o presente trabalho visa realizar a identificação e caracterização sedimentológica dos trechos fluviais, de modo que haja a possibilidade de presença de aquíferos aluviais, visando um melhor entendimento dessas áreas, gerando informações úteis para que a população residente possa melhorar as práticas e técnicas de aperfeiçoamento de captação, uso e armazenamento dos recursos hídricos através da exploração desses ambientes. A pesquisa foi realizada na bacia riacho do Tigre, no município de São João do Tigre, semiárido paraibano.…”

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“…Além disso, o processo de sedimentação a jusante da barragem pode ser drasticamente reduzido. (LOVE et al, 2011; SOUZA e ALMEIDA, 2015).…”

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Caracterização Hidrossedimentológica Dos Trechos Aluviais Da Bacia Riacho Do Tigre – Pb

Silva

Souza²

2017

RCG

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RESUMOAs pesquisas voltadas à gestão dos recursos hídricos vêm ganhando importância nos últimos anos no Brasil, sobretudo no nordeste, em decorrência dos anos de estiagem prolongada em ambientes semiáridos. Contudo, a exploração dos aquíferos aluviais surge como alternativa complementar para suprir a carência hídrica, buscando aperfeiçoar as formas de captação, armazenamento e uso de água pelas comunidades. Assim, este trabalho buscou identificar e caracterizar os trechos fluviais com possibilidade de presença de aquíferos aluviais, de modo que a comunidade local possa melhorar as técnicas de captação, uso e armazenamento de água através da exploração desses ambientes. A pesquisa foi realizada no município de São João do Tigre -PB. Foram realizados os mapeamentos dos trechos aluviais, fazendo a identificação do uso e ocupação do solo. Os trechos aluviais passaram por análises e classificações sedimentológicas, e posteriormente fazendo-se o agrupamento de três classes referente aos tipos de depósitos aluviais. A partir dos resultados gerados foi possível concluir que as áreas de estocagem de deposição estão concentradas nos ambientes de baixo gradiente. A alta hidrodinâmica apresentada nos resultados reflete na alta variação dos tipos de depósitos aluviais analisados, podendo gerar influência na formação de aquíferos aluviais com características diversas. Palavras-chave: Aquíferos aluviais; Ambientes fluviais semiáridos; Gestão da água. ABSTRACTThe research focused on the management of water resources are gaining importance in recent years in Brazil, especially in the Northeast, due to the years of prolonged drought in semiarid environments. However, exploitation of alluvial aquifers appears as alternative complement to supply the water shortage, seeking to improve the forms of capture, storage and use of water by communities. Thus, this study sought to identify and characterize the river stretches in which there is the possibility of alluvial aquifers, so that the local community can improve harvesting techniques of water use and storage by exploiting these environments. 58Caminhos de Geografia │Uberlândia, MG │v.18 n.63 │set. 2017 │ISSN 1678-6343 conducted in the municipality of São João do Tigre -PB. The mapping of alluvial sections were performed, making the identification of land use and occupation. Sedimentological analysis and ratings were made to the alluvial stretches, and then making up the grouping of three classes referring to the types of alluvial deposits. From the generated results it was concluded that the deposition of storage areas are concentrated in low-gradient environments. The high hydrodynamics presented in the results reflects in the high variation of the analyzed types of alluvial deposits, which can generate influence in the formation of alluvial aquifers with different characteristics. Keywords: Aquifers Alluvial; Semiarid riverine environments; Water management. * * * IntroduçãoAntigas civilizações afloraram nas margens dos grandes rios, algumas se desenvolveram dessa maneira até os ...

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A water balance modelling approach to optimising the use of water resources in ephemeral sand rivers

Cited by 25 publications

References 34 publications

An Assessment of Irrigation Water Quality and Selected Soil Parameters at Mutema Irrigation Scheme, Zimbabwe

An Assessment of Irrigation Water Quality and Selected Soil Parameters at Mutema Irrigation Scheme, Zimbabwe

Challenges in assessing the regional feasibility of local water storage

Caracterização Hidrossedimentológica Dos Trechos Aluviais Da Bacia Riacho Do Tigre – Pb

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