Las Animas - Bent County Library District

This study is a continuation of the work to determine the point of incipient failure and other hydraulic characteristics of riprap for providing criteria for design of stable ripraps in flood control channels. Two sizes riprap materials were tested. One material had a d = 1.0 in. and the other had a d₅₀ = 2.0 in. Both riprap sizes had the ETL 1110-2-120 gradation recommended by WES.

Rainwater Harvesting for? Drylands and Beyond , Volume 2? is a how-to guide enabling you to "plant the rain" by creating water-harvesting "earthworks"?or "rain gardens." Earthworks? are simple, inexpensive strategies and landforms that passively harvest multiple sources of free on-site water including rainfall, stormwater runoff, air conditioning condensate, and greywater within "living tanks" of soil and vegetation. The plants then pump the water...

Learn about the Panama Canal and how it was built.

Argues that the Clean Water Act of 1972 has done its job in limiting the number of industrial pollutants going into the country's waterways, but that approximately one-third of America's stream miles and lake areas are still polluted due to man's disruption of the natural water cycle.

With supplies of non-renewable energy sources running low and the threat of global warming and climate change, there is an urgent need to look at other types of energy resources and how well they can meet our power needs. Alternatives to fossil fuel are renewable energy are needed and water power generates 1/5 of the world's electricity.