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.

Describes the dam and how it was built.

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...

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.