CALFED Levee Stability Program

CALFED Levee Stability Program – Sacramento-San Joaquin Delta, CA

The Sacramento-San Joaquin Delta, a crucial conduit for California’s overall water supply, consists of roughly 1,115 miles of levees to protect the surrounding farms, cities, schools and people in and around the area.

However, the Delta’s levees are vulnerable to failure due to floods, earthquakes and rising sea levels brought about by climate change. Failure of these levees could endanger the state’s water supply.

The intent of the Levee Stability Program is to reduce the risk to water supply and quality, agriculture and residential uses and economic ventures, infrastructure, and the ecosystem from the effects of catastrophic breaching of levees in the Sacramento-San Joaquin Delta.

Ghirardelli Associates’ specialists provided environmental planning, restoration assessment, permitting, and related services in support of the Levee Stability Program. As part of the Joint Venture team, Ghirardelli’s project managers completed Trip Reports documenting site visits, Preliminary Draft Project Implementation Reports, and Project Management Plans for over 30 levee rehabilitation and upgrade sites in the Sacramento-San Joaquin Delta.

Elements included collecting existing site information, identifying environmental impacts of levee stability upgrade alternatives, and estimating mitigation requirements. Cost estimates for environmental assessments and studies needed to complete and obtain approval of a Project Implementation Report were also prepared.


  • Environmental Constraint Analysis
  • Alternative Assessment
  • Planning/ Permitting
  • Habitat Restoration
  • Project Management
  • Cost Analysis