11.   Smaller dams throughout the Yangtze River system would have been just as effective with much less cost and impact on the environment, she says.

12.   The debate over Lake Powell is mostly symbolic, but the impending demolition of smaller dams is real.

13.   The rest comes from a smaller dam and deep wells in the capital.

14.   They say flood control could be done better by smaller dams.

15.   There are other smaller dams that serve remote towns.

16.   Thousands of smaller dams, some poorly constructed and maintained, are dotted throughout the country, often for irrigation and water supplies in rural areas.