Environmental flows in Nepal - an evaluation of current practices and analysis of the Upper Trishuli -I Hydroelectric Project

Hydro Nepal: Journal of Water, Energy and Environment Pub Date : 2015-08-28 DOI:10.3126/HN.V17I0.13268

Narayanhari Rijal

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引用次数: 8

Abstract

Environmental assessments and environmental flows are important components in modern hydropower development. Various methods employing a combination of hydrology, hydraulics, environmental assessment and ecology have been developed for analysing and setting environmental flows. In the developed countries, detailed assessments are being carried out for setting environmental flows whereas very little attention has been given to this topic in Nepal. However, this trend is changing in recent developments. We discuss current minimum flow practices for a number of hydropower projects in the planning, development and operation phases to observe minimum flows and environmental flow over time. Furthermore, we present an analysis of environmental flows for the Upper Trishuli-I Hydroelectric Project in Nepal that is currently in the planning phase. We base our conclusion using current flow assessment methodologies to study the effects of proposed minimum flows and possible changes to improve the effect of compensatory releases. HYDRO Nepal Journal Journal of Water, Energy and Environment Issue: 17, July 2015

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尼泊尔的环境流动——对上特里舒利1号水电项目现行做法的评价和分析

环境评价和环境流量是现代水电开发的重要组成部分。利用水文学、水力学、环境评价和生态学相结合的各种方法，已经发展出分析和设定环境流量的方法。在发达国家，正在进行详细的评估，以确定环境流量，而在尼泊尔，很少注意这个问题。然而，在最近的事态发展中，这种趋势正在发生变化。我们讨论了目前一些水电项目在规划、开发和运营阶段的最小流量实践，以观察最小流量和环境流量随时间的变化。此外，我们还对目前处于规划阶段的尼泊尔上Trishuli-I水电项目的环境流量进行了分析。我们使用当前的流量评估方法来研究建议的最小流量的影响和可能的变化，以改善补偿性释放的效果。水电尼泊尔杂志水，能源和环境杂志，第17期，2015年7月

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Hydro Nepal: Journal of Water, Energy and Environment

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