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Project: Santa Ana River Mainstem (SAMSB)

Description: Santa Ana River Mainstem Project provides 100-year flood protection to over 3.35 million people in the growing urban communities in Orange, Riverside and San Bernardino Counties. Covering 75 miles, starting from headwater of Santa Ana River east of City of San Bernardino to the mouth of the river at the Pacific Ocean, the Project includes seven independent features. Project also includes environmental features to provide wetland habitat for federally listed endangered species. The plan provides for the acquisition of mitigation lands, restoring temporary loss of habitat values, cultural mitigation, and a 32-mile system of recreation trails.

Reference Number: 3860-PM-335

Implemented By: San Bernardino County Department of Public Works

Objective: Flood Protection

Type: Acquisition Easement, Infrastructure Improvement, Other

Total Cost: $42,947,670.26

Project Status: Project Implementation

On Time?: Yes    Within Scope?: Yes    Within Budget?: Yes

Estimated Completion: 12/31/2032    Actual Completion:

Associated Counties: San Bernardino

Contribution SourcesContribution DateContribution Amount
Local Contribution7/18/2014$17,107,500.16
Other State Funds7/18/2014$16,352,104.84
Prop. 84, Flood Control Subventions Program7/18/2014$3,988,065.26
Prop. 1E, Flood Control Subventions Program4/6/2020$5,500,000.00

Project MetricMetric TopicQuantityUnit
Acquisition EasementFlood Control/Protection Corridor489acres acquired
Infrastructure ImprovementFlood Control Subventions  


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