free-flowing riverとは 意味・読み方・使い方

名詞

free-flowing river (複数形 free-flowing rivers)

1. Any river or section of a river existing or flowing in a natural condition without impoundment, diversion, straightening, riprapping, or other modification of the waterway.^[1]
   • 1980, A Report on Natural and Free-flowing Rivers in the Northwestern United States, US Department of the Interior, Heritage Conservation and Recreation Service, page 4:

     In addition, the baseline data can be used to measure future losses of natural, free-flowing river resources.

   • 1990, Proposed Dixie Resource Area Resource Management Plan / Final Environmental Impact Statement, US Department of the Interior, Bureau of Land Management:

     The aggregated length of BLM segments may also constitute only a small proportion of the total length of the free-flowing river section.

   • 2021 August 10, M. L. Thieme; D. Tickner; G. Grill; J. P. Carvallo; M. Goichot, “Navigating trade-offs between dams and river conservation”, in Global Sustainability‎^[1], Cambridge University Press, DOI:10.1017/sus.2021.15, retrieved 2022-08-16:

     We calculate potential loss of free-flowing rivers (FFRs) if proposed hydropower projects are built globally.

   • 2022 August 16 (last accessed) “Free-flowing rivers are the freshwater equivalent of wilderness areas”, in World Wildlife Fund‎^[2]:

     A free-flowing river is largely unaffected by human-made changes to its flow and connectivity.

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