Projects> Stanislaus Afterbay Dam Removal and Revegetation

Stanislaus Afterbay Dam Removal and Revegetation

Tuolumne and Calaveras Counties, CA

Biological Services, Environmental Planning & Compliance, Habitat Restoration, GIS 

The Stanislaus Afterbay Dam was a 194-foot wide timber and steel dam built in 1907 along the Middle Fork of the Stanislaus River. After outliving its effectiveness following the completion of New Melones Reservoir in 1982, the dam bridge was removed in 2008 and the dam was removed in 2012. Sequoia was part of the team tasked with ensuring environmental compliance and restoration goals were met per requirements of permits from the U.S. Bureau of Reclamation (USBR), the U.S. Army Corps of Engineers (USACOE), the State Regional Water Quality Control Board (SRWQCB) and the California Department of Fish and Wildlife (CDFW). Sequoia performed preconstruction surveys for foothill yellow legged frog, western pond turtle, and nesting birds, and vegetation mapping for planned tree removal. During dam removal activities Sequoia biologists helped lead the large fish relocation effort where over 2,000 fish were safely moved to avoid impacts from project activities. Following the dam removal Sequoia botanists and revegetation planners used the onsite survey information to draft the revegetation plan approved by the CDFW. Our revegetation team coordinated the purchase and installation of site-specific grassland seed and oversaw the replanting of at the project site. In the fall of 2013 Sequoia harvested willow pole plantings onsite and re-planted the site according to CDFW permit guidelines. Sequoia has been tasked to lead the revegetation monitoring for the project and work with permitting agencies to meet the planned revegetation goals.