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- Title
Environmental flows in two highly regulated rivers: the Hawkesbury Nepean in Australia and the Durance in France.
- Authors
Warner, Robin Frederick
- Abstract
Environmental flows are waters released from storages to improve degraded ecosystems. Subsequent monitoring is then used to determine incremental benefits. These flows in the Hawkesbury Nepean and the Durance are very low compared with those advocated for other systems. In the former, water is used in Sydney and Wollongong, while the Durance water is diverted to supply 16 hydropower stations. In this system, reserved flows have been set at 2.5% of mean discharge, while in the Australian river, environmental flows have varied, but are usually 3.6% or less in the current regime. Additionally, increasing the transparencies of barrages and weirs will enhance the effectiveness of current environmental flows. Implementation of such flows imposes many problems because of structural difficulties for releasing water and compromising regulatory infrastructures. Additionally, with the onset of global warming, both systems will suffer significant water losses.
- Subjects
FRANCE; STREAMFLOW; RIVERS; ENVIRONMENTAL management; CLIMATE change; ENVIRONMENTAL protection
- Publication
Water & Environment Journal, 2014, Vol 28, Issue 3, p365
- ISSN
1747-6585
- Publication type
Article
- DOI
10.1111/wej.12045