Effects of a diversion hydropower facility on the hydrological regime of the Correntes River, a tributary to the Pantanal floodplain, Brazil

Fantin-Cruz, Ibraim; Pedrollo, Olavo Correa; Girard, Pierre; Zeilhofer, Peter; Hamilton, Stephen K.

doi:10.1016/j.jhydrol.2015.10.045

Cited by 57 publications

(47 citation statements)

References 39 publications

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“…The main adverse environmental and socioeconomic impacts of dam reservoirs (see Exhibit ) are essentially related to hydrological alterations, so that sustainable reservoir design and management must be conducted to mimic predam natural flow regimes. It is also possible to reconstruct the natural regime in the postdam development phase in the absence of predam hydrological data (see Fantin‐Cruz, Pedrollo, Girard, Zeilhofer, & Hamilton, ).…”

Section: Discussionmentioning

confidence: 99%

Minimizing disruptions caused by damming and ensuring the health of downstream ecosystems

Mata‐Lima

Alvino-Borba

Vasquez

et al. 2017

Environmental Quality Mgmt

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In view of the Brazilian Ten‐Year Energy Expansion Plan 2021, this article presents a discussion on environmental flow (e‐flow). The authors analyze the literature to show the evolution of publications concerning e‐flow releases from the perspective of ecosystems services preservation considering results from different case studies from throughout the world. Finally, two main recommendations are drawn regarding e‐flow are: (1) performing a holistic approach to e‐flow planning, including hydrological, hydraulic, water quality, habitat, and riparian zone considerations; and (2) installing in new structures adequate bottom outlets to allow a range of adjustable e‐flow from reservoir dams to reproduce natural flow variations.

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Section: Discussionmentioning

confidence: 99%

Minimizing disruptions caused by damming and ensuring the health of downstream ecosystems

Mata‐Lima

Alvino-Borba

Vasquez

et al. 2017

Environmental Quality Mgmt

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“…In doing so, we also aim to contribute to the literature on Mato Grosso's water governance from a social science perspective, as the topic is currently studied mostly from more technical viewpoints, e.g., investigating flood control mechanisms [40], water quality [41,42], the impact of hydroelectric power facilities [43,44], and its legal and institutional framework [45], or has a more narrow regional focus on the Pantanal wetland [46,47].…”

Section: The Political Ecology Of Water Abundancementioning

confidence: 99%

The Paradox of Water Abundance in Mato Grosso, Brazil

Schulz

Ioris

2017

Sustainability

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Abstract:While much effort has gone into studying the causes and consequences of water scarcity, the concept of water abundance has received considerably less attention in academic literature. Here, we aim to address this gap by providing a case study on the perceptions and political implications of water abundance in the Brazilian state of Mato Grosso. Combining a political ecology perspective on contemporary water governance (empirically based on stakeholder interviews with members of the state's water sector) with an overview of the environmental history of this hydrosocial territory, we argue, first, that water abundance has become a foundational element of Mato Grosso's identity, situated in the wider context of natural resource abundance more generally and second, that water abundance today is a contested concept witnessing discursive struggles around its political implications and meaning. More specifically, there is a clash between the dominant conceptualisation of water abundance as a foundation for rich economic, ecological, social, and cultural values and benefits, often espoused by members of the political and economic elite, e.g., for marketing purposes, and a more critical but less widespread conceptualisation of water abundance as a source of carelessness, lack of awareness, and poor water governance, typically put forth by more informed technical staff of the public sector and civil society activists. By providing a distinct treatment and discussion of the concept of water abundance, our research has relevance for other water-rich regions beyond the immediate regional context.

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“…These alterations are usually related to shifts in the marginal distributions of peaks and recessions of inflow hydrographs (HAAS et al, 2014), which increase the streamflow variation and may affect the dynamics of both sediment and nutrient transport and the conditions for aquatic fauna and flora development in a river reach. They may also entail the reduction of river-floodplain connectivity and induce losses of the associated ecosystem services (ANDERSON et al, 2015;FANTIN-CRUZ et al, 2015;FANTIN-CRUZ et al, 2016;KUMAR;KATOCH, 2015; and references therein). In fact, Haas et al (2014) point that, in run-of-river operations, flow rates released from the reservoir are set to be similar to the inflow counterparts, but usually do not account for the time lag due to storage effects.…”

Section: Introductionmentioning

confidence: 99%

“…Several analysis techniques have been proposed for investigating the effects of SHPs in the streamflow regimes. They encompass flood frequency analysis (AYALEW et al, 2017), flow duration curves (FANTIN-CRUZ et al;2015) and statistical evaluation of changes in daily, seasonal or annual hydrological indexes (RICHTER et al, 1996;ALONSO et al, 2017). Notwithstanding, these methods usually rely on specific (and often coarse) time resolutions for the analyses and do not provide meaningful insights on the potential alterations of streamflow-related cyclic phenomena (WHITE et al, 2005;TONGAL et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…In fact, natural streamflow signals may be thought of as the superimposition of multiple wave-like patterns, associated to distinct frequencies, which aggregate periodic or quasi-periodic characteristics of the phenomena that drive the water cycle in a catchment. These overlapping waves provide a comprehensive account on the physical processes underlying the streamflow regimes and play an important role in many human activities, as, for instance, in agricultural production (LIU et al, 2014), and in the maintenance of ecological balance (CUNHA;JUNK, 2015;KUMAR;KATOCH, 2015;FANTIN-CRUZ et al, 2015). From such a perspective and given the acknowledged sensitiveness of natural systems even for small to moderate departures from their natural conditions, it appears that, for developing more coherent decision-making strategies concerning the licensing and operation of SHPs, the previously mentioned statistical analysis techniques regarding post-dam streamflow conditions should be complemented with formal spectral analysis procedures.…”

Section: Introductionmentioning

confidence: 99%

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Effects of small hydropower plants in cascade arrangement on the discharge cyclic patterns

Paes

Costa

Fernandes

2019

RBRH

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Because it is assumed that the impacts in the natural streamflow regime promoted by Small Hydropower Plants (SHP) are negligible, environmental licensing for such facilities is usually easier. Nonetheless, recent studies have shown that the operation of SHPs may disturb the natural flow conditions, mainly when the plants are placed in a cascade arrangement. In this context, the main objective of this study is investigating the alterations in flows periodic behavior in a system of six hydropower plants, being five of them SHPs. Daily discharge time series were extracted from eight streamflow gauging stations located in the Jauru River catchment, Brazil, whose period-of-record spans from May/2016 to Aug/2017. By using the wavelet transform, dominant cycles along the time series were identified and their coherence in nearby stations was compared. Among the results, one may observe that, from upstream to downstream, the high frequency cycles became more important whereas the low frequency ones have weakened. Additional analyses indicate that such alterations are not directly related to meteorological factors or to the gradual increasing in the catchment's drainage area in the downstream direction, which suggests that the operation of SHPs may affect the streamflow natural cycles. RESUMOPor assumir que os impactos nos regimes naturais de vazão de Pequenas Centrais Hidrelétricas (PCHs) são desprezíveis, os licenciamentos ambientais para esses empreendimentos são relativamente fáceis de serem obtidos. Contudo, estudos recentes têm mostrado que a operação de PCHs pode afetar as condições naturais de escoamento especialmente quando os aproveitamentos hidrelétricos são alocados em cascata. Nesse contexto, o principal objetivo deste trabalho é investigar a alteração do comportamento das periodicidades de vazões em um sistema com seis aproveitamentos hidrelétricos, sendo cinco PCHs. Foram utilizadas séries de vazões diárias extraídas de estações localizadas na bacia do rio Jauru, na região hidrográfica do Alto Paraguai, Brasil, entre maio de 2016 e agosto de 2017. Por meio da transformada wavelet, foi possível identificar ciclos dominantes ao longo do tempo e comparar a coerência de séries de vazões entre estações adjacentes. Entre os resultados, observou-se que, no sentido de montante para jusante, os ciclos de alta frequência se tornam mais evidentes enquanto aqueles de baixa frequência ficam enfraquecidos. Análises adicionais indicaram que tais alterações não estão diretamente relacionadas a fatores meteorológicos ou ao aumento gradual da área de drenagem da bacia na direção a jusante, o que sugere que a operação das PCHs pode afetar o ciclo natural de vazões.Palavras-chave: Periodicidade de vazão; Transformada wavelet; Impacto de pequenas barragens; Usina a fio d'água; Análise de séries temporais.RBRH, Porto Alegre, v. 24, e33, 2019Effects of small hydropower plants in cascade arrangement on the discharge cyclic patterns 2/15

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Effects of a diversion hydropower facility on the hydrological regime of the Correntes River, a tributary to the Pantanal floodplain, Brazil

Cited by 57 publications

References 39 publications

Minimizing disruptions caused by damming and ensuring the health of downstream ecosystems

Minimizing disruptions caused by damming and ensuring the health of downstream ecosystems

The Paradox of Water Abundance in Mato Grosso, Brazil

Effects of small hydropower plants in cascade arrangement on the discharge cyclic patterns

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