The project consisted of repairing four eroded levee sites along the
Sacramento and Feather Rivers near Sacramento, CA. Anderson Dragline
Inc. worked as a subcontractor for placement of riprap.
Work included placement of approximately 90,000 tons of riprap in and
above the water level of the rivers. Three sites were accessible for
repair from land, while one site had to be repaired from the water,
necessitating the use of marine equipment. A temporary barge loading
facility was constructed to load riprap onto barges that were then
transported by tug boat to the repair site. Rock was placed using a
Once riprap was placed and graded to the specified grade, in-stream wood
materials consisting of almond trees and willow bundles (fascines) were
buried in the riprap at the water's edge to provide shade for aquatic
Above the normal river elevation, a blend of riprap and soil was placed
to complete the repair of the eroded scours. This material was graded
and covered with a layer of soil to serve as a planting bed. A
landscaping subcontractor then completed the sites by installing
irrigation systems, plants, plugs, willow cuttings and hydroseeding.
Irrigation and maintenance of the plants is ongoing for three years as a
component of the contract.
One repair site on the Sacramento River required covering the
archaeological remains of a Native American burial site. Specified
measures for the covering of remains were completed under the
supervision of a government archaeologist and tribe member.