scholarly journals AVALIAÇÕES DE RISCO EM BARRAGENS: ESTUDO DE CASO DA BARRAGEM MALCOZINHADO NO NORDESTE BRASILEIRO

2017 ◽  
Vol 14 (1) ◽  
Author(s):  
Mariana Campos Fontenelle ◽  
Alexandre de Sousa Fontenelle ◽  
Yago Machado Pereira de Matos ◽  
Fernando Feitosa Monteiro
Keyword(s):  
Risk Assessment ◽  
Water Resources ◽  
Water Resources Management ◽  
The State ◽  
Management Company ◽  
Resources Management ◽  
Hazard And Risk ◽  
Hazard Level ◽  
Brazilian Northeast

RESUMO: O presente trabalho tem a proposta de avaliar a eficácia de duas metodologias de avaliação de risco de uma barragem no Nordeste Brasileiro no intervalo de 10 anos, baseando-se na inspeção e no nível de ameaça. Utiliza-se a metodologia Nível de Perigo da Barragem (NPB) para cálculo do nível de ameaça (Fontenelle, 2007) e para o cálculo do risco as metodologias da Companhia de Gestão dos Recursos Hídricos do Ceará (COGERH) e do Conselho Nacional de Recursos Hídricos (CNRH). Observa-se que o crescente número de barragens soma-se a preocupação com a segurança destas. Face a isto, utiliza-se a avaliação de risco como forma de priorizar ações de manutenção e recuperação. O estudo de caso ocorreu na Barragem Malcozinhado, localizada no município de Cascavel, no estado do Ceará. Com base na inspeção, calcula-se o nível de ameaça e o risco, compara-se estes com os resultados de 2006. Assim, observou-se o aumento no nível de ameaça, no entanto, o risco permaneceu, em geral, baixo, semelhante aos resultados de 2006. Este resultado se deve ao fato de que o número de anomalias aumentou, porém trata-se de uma barragem jovem, de pequeno porte e inspecionada regularmente.ABSTRACT: The present study has the proposal of evaluating the effectiveness of two methodologies of risk Assessment of a Brazilian Northeast dam in a range of 10 years, based on the inspection and the level of hazard. The methodology used for calculating the hazard level is the Dam Hazard Level (NPB). In addiction, in order to evaluate the risk is used the methodology of the Water Resources Management Company of Ceará (COGERH) and the methodology of National Resources Council Water (CNRH). The number of dams is increasing with to the concern for their safety. In view of this, risk assessment is used as a tool to prioritizing maintenance and recovery actions. The case study occurred in the Malcozinhado Dam, located in the municipality of Cascavel, in the state of Ceará. Based on the inspection, the level of hazard and risk is calculated, compared to the results for 2006. Thus, the increase in the level of hazard was observed, but the risk remained generally low, similar to 2006 result. This result is due to the fact that the number of anomalies has increased, but it is a young, small and regularly inspected dam.

Water Resources Management

2014 ◽  
pp. 180-200 ◽  
Author(s):  
Sabyasachi Nayak
Keyword(s):  
Water Management ◽  
Pilot Study ◽  
Water Resources ◽  
Water Resources Management ◽  
Social Economic ◽  
The State ◽  
Resources Management ◽  
Partnership Approach ◽  
The Impact ◽  
Insight Into

This chapter explores grassroots interventions by forging partnerships with stakeholders in improving the management of water resources at the community level. In order to gain insight into the nuances of managing water resources in partnership, a pilot study was instituted in the State of Rajasthan, India. The efficacy of the partnership approach in ensuring equitable water management is demonstrated. The analysis is supported by data collected through the administration of a questionnaire for five different stakeholders. The impact of the intervention reiterates the positive social, economic, and environmental outcomes in a more sustainable manner.

Formulation of integrated water resources management (IWRM) plan at district level: a case study from Bundelkhand region of India

Water Policy ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 52-69 ◽  
Author(s):  
V. C. Goyal ◽  
Anuradha Garg ◽  
Jyoti P. Patil ◽  
T. Thomas
Keyword(s):  
Water Resources ◽  
Water Resources Management ◽  
Water Conservation ◽  
Demand Management ◽  
Geographical Area ◽  
Integrated Water Resources Management ◽  
District Level ◽  
Resources Management ◽  
The Government

Abstract Integrated water resources management (IWRM) is being implemented all over the world, considering its wide area of applications and flexible spatial scale. Scientists have found IWRM useful in an Indian context also where a coordinated development of water and land resources is sought as part of complete economic, social and environmental welfare. The paper presents the concepts of ‘Local IWRM’ planning applied to water conservation and management in a case study of Ur river watershed in Tikamgarh district of Madhya Pradesh (India). The Plan considers effective utilization of land, water and other available natural resources, linked to the vulnerabilities and livelihood opportunities in the geographical area. The IWRM Plan, designed in three sections – (1) water management, (2) land management, and (3) livelihood management – provides specific suggestions on the activities under these three themes as useful inputs to the District Irrigation Plan (DIP) of the Government. The proposed IWRM Plan intends to promote the component of water demand management in district level planning and is envisioned to be an ‘implementable’ planning document for district level government. Acceptability of the IWRM plan is potentially enhanced as the plan was developed through a participatory process, wherein all relevant stakeholders were consulted at different stages of development.

Operationalising uncertainty in data and models for integrated water resources management

2007 ◽  
Vol 56 (9) ◽  
pp. 1-12 ◽  
Author(s):  
M.W. Blind ◽  
J.C. Refsgaard
Keyword(s):  
Water Management ◽  
Risk Assessment ◽  
Decision Making ◽  
Water Resources ◽  
Water Resources Management ◽  
Integrated Water Resources Management ◽  
Integrated Water Management ◽  
Resources Management ◽  
Broad Objective ◽  
Parameter Values

Key sources of uncertainty of importance for water resources management are (1) uncertainty in data; (2) uncertainty related to hydrological models (parameter values, model technique, model structure); and (3) uncertainty related to the context and the framing of the decision-making process. The European funded project ‘Harmonised techniques and representative river basin data for assessment and use of uncertainty information in integrated water management (HarmoniRiB)’ has resulted in a range of tools and methods to assess such uncertainties, focusing on items (1) and (2). The project also engaged in a number of discussions surrounding uncertainty and risk assessment in support of decision-making in water management. Based on the project's results and experiences, and on the subsequent discussions a number of conclusions can be drawn on the future needs for successful adoption of uncertainty analysis in decision support. These conclusions range from additional scientific research on specific uncertainties, dedicated guidelines for operational use to capacity building at all levels. The purpose of this paper is to elaborate on these conclusions and anchoring them in the broad objective of making uncertainty and risk assessment an essential and natural part in future decision-making processes.

Building a mosaic of values to support local water resources management

Water Policy ◽  
2006 ◽  
Vol 8 (5) ◽  
pp. 415-434 ◽  
Author(s):  
Leon M. Hermans ◽  
Gerardo E. van Halsema ◽  
Henry F. Mahoo
Keyword(s):  
Water Resources ◽  
Water Resources Management ◽  
Environmental Values ◽  
Data Availability ◽  
Economic Values ◽  
Resources Management ◽  
Valuation Methods ◽  
Local Stakeholders ◽  
Local Water

Water valuation is needed to enable sound and well-informed decisions on the allocation and management of water resources. The existing methods for water valuation have an important potential and need to be further developed. Practical tools are especially urgently needed to aid implementation on the ground. There is a need to expand the scope of existing water valuation methods beyond the focus on economic values to also include social and environmental values. Also, water valuation needs to fit the constraints of data availability and expertise that are typically found in practice and should be stakeholder driven, addressing values that are of relevance to local stakeholders. This paper proposes a stakeholder-driven approach to water valuation, based on the use of different indicators to produce a mosaic of values that support water resources management by local stakeholders. The use of this approach is illustrated by a case study in Tanzania.

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