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Environmental FlowsSaving Rivers in the Third Millennium$
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Angela H. Arthington

Print publication date: 2012

Print ISBN-13: 9780520273696

Published to California Scholarship Online: May 2013

DOI: 10.1525/california/9780520273696.001.0001

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Flow Protection Methods

Flow Protection Methods

(p.149) 11 Flow Protection Methods
Environmental Flows

Angela H. Arthington

University of California Press

In the early 1990s, river scientists made the case for a broader, holistic approach to sustain and conserve river ecosystems rather than focusing on the habitat requirements of a few target species. Flow protection methods are designed to define and quantify the volumes and temporal patterns of stream discharge that should be preserved to flow downstream below new dams to sustain particular ecological and societal values. These “proactive” methods help to advise water managers and dam designers at the planning stage of new water infrastructure developments, and to set constraints on new developments in large catchments. Two classes, termed bottom-up (e.g., the BBM-Building Block Methodology) and top-down approaches (e.g., Benchmarking Methodology; DRIFT-Downstream Response to Imposed Flow Transformation), are described.

Keywords:   flow protection methods, bottom-up methods, Building Block Methodology, top-down approaches, Benchmarking Methodology, DRIFT

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