Dams going safely over the top

Article Abstract:

Engineers have discovered the viability of cellular concrete mats (CCMs) for the repair and maintenance of old dams. Cellular concrete mats provide a cost-effective alternative to conventional upgrade methods, expanding spillways and elevating crests. These prevent erosion during overtopping flows and earlier tests showed that these systems performed satisfactorily when subjected to full-scale overtopping flow tests. CCMs have been used to repair the Blue Ridge Parkway Dams at Bass Lake, Price Lake and Trout Lake.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Local water, local control

Article Abstract:

Economic programs and the empowerment of water users have helped local irrigation districts to conserve water resources. Between Sep 6 and 11 water experts met at Hague, Netherlands, to discuss water issues as part of the International Commission on Irrigation and Drainage's conference and exhibition on Irrigation, Drainage, and Flood Control, and various case studies on water were discussed.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Washington

Article Abstract:

The article discusses the United States governmental actions with regard to maintenance and improvement of dams, water resources development, and gas tax levy.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code: