出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/04/26 09:17 UTC 版)
A Wild River (United States, Australia, & New Zealand) or Heritage River (Canada) is a river or a river system designated by a government to be protected and kept "..almost untouched by development and .. therefore in near natural condition, with all, or almost all, .. natural values intact."