2010 AMERICAN SOCIETY OF CIVIL ENGINEERING GEOTECHNICAL AND REGION 9 OUTSTANDING SMALL WATER PROJECT. 2010 AMERICAN GENERAL CONTRACTORS AWARD for INNOVATION IN CONSTRUCTION TECHNIQUES or MATERIALS

Flume 51 project required replacing a raised wooden structure traversing steep and unstable landslide-prone slopes. Identifying stable bedrock and landslide paths were critical to the success of this design.

The project design focused on the FERC mandated Factors of Safety for the new construction and included hillside drainage control, landslide material removal, slope grading, extensive use of woven geotextile fabric at subgrade to promote drainage and to improve soil strength, and MSE wall construction.