| June
24, 2004
 The Olivenhain Dam and Reservoir received the American
Society of Civil Engineers (ASCE) San Diego Section’s Outstanding Civil
Engineering Project of the Year award. The project was selected for
its use of newer engineering and construction methods, which best
met the needs of the San Diego County Water Authority and the public,
and fit into the surrounding environment.
Olivenhain Dam is the tallest and largest volume roller-compacted
concrete (RCC) gravity dam in North America. It is 318-feet-high
and 2,586-feet-long and contains 1.44 million cubic yards of RCC.
It is the first RCC gravity dam constructed in California.
Gannett Fleming, an international planning, design, and construction
management firm, was a principal subcontractor to the Parsons-Harza
Joint Venture. Gannett Fleming provided services for RCC materials
investigation, RCC mix design, and RCC thermal stress modeling. The
firm was also responsible for dam facing system design, foundation
gallery design, instrumentation system design, and construction phase
engineering support.
The $150 million dam is located in a forest preserve approximately
17 miles north of San Diego, Calif. and is part of the San Diego County
Water Authority’s $1 billion Emergency Storage Project. The dam’s
reservoir is intended to provide 24,000 acre-feet of local raw water
supply reserves to the San Diego County area and its approximate 2.9
million people in the event of a natural or man-made catastrophe.
For
additional information, contact William B. Bingham via e-mail or
Robert A. Kline, Jr. via e-mail. | 
