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Accession Number DE2012-1047604
Title Shaping Pulse Flows to Meet Environmental and Energy Objectives. Bi-Annual Report 2009-2011.
Publication Date 2012
Media Count 37p
Personal Author H. I. Jagger
Abstract In a review of studies to optimize environmental flows in regulated rivers, Jager and Smith (2008) concluded that the path toward sustainable reservoir operation requires a more quantitative, science-based approach to shaping flows to benefit aquatic biota. Flow management in regulated rivers is driven by many considerations, only one of which is to support ecosystem services. The lack of understanding of complex relationships linking flow regimes with river ecosystems is a significant barrier to better defining the ideal timing and duration of environmental flows. Non-ecological objectives are much easier to quantify, and thus, reservoir flow releases are scheduled to prevent future flooding and to store water for future uses, including generation of hydropower at times of peak demand and high value. Environmental flows intended to benefit downstream ecosystems are set by regulations and license conditions that specify minimum flows, ramping rates, and seasonal pulse flows. The quantitative methods currently to define environmental flows have drawbacks. Resource agencies, acting on behalf of riverine biota, propose minimum flow regulations based on the In-stream Flow Incremental Methodology.
Keywords Aquatic ecosystems
Environmental effects(Animals)
Hydropower electric plants
Peak demand
Stream flow
Water storage

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 48B - Natural Resource Management
48G - Hydrology & Limnology
57H - Ecology
68D - Water Pollution & Control
Corporate Author Oak Ridge National Lab., TN.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1304
Contract Number DE-AC05-00OR22725

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