“ Now that more than 45,000 large dams (over 15 meters [50 ft] high) have been built around the world, a growing body of research indicates that their costs may be higher than many ever imagined. ”
تقول مجلة مراقبة العالم ‏ (‏ بالانكليزية )‏ :‏ « لقد تزعزع الافتراض ان الفوائد تفوق الخسائر .‏