LawWiki
HomeCodesSearchGlossaryAPIAbout
LawWiki

Plain English summaries of California law with zero-hallucination AI. Every summary is verified against official source text.

Product

  • Search
  • Codes
  • About

Legal

  • Privacy Policy
  • Terms of Service
  • Disclaimer

© 2026 LawWiki. All rights reserved.

HomeWater CodeDiv. 6Pt. 6Ch. 2Art. 2§ 12645 Sacramento Flood Control History

§ 12645 Sacramento Flood Control History

Water Code·California
AI Summary·Official Text·Key Terms·Related Statutes·References
AI SummaryVerified

§ 12645 Sacramento Flood Control History

This law explains how California and the federal government work together on flood control in the Sacramento and San Joaquin valleys, who is responsible for maintaining levees, and how liability for floods is determined, especially after a court case and a 2006 bond act that defined the State Plan of Flood Control.

Example

A homeowner builds a house behind a levee that is maintained by a local district. When the levee fails and the house floods, the homeowner wants to know if the state can be held responsible.

The law says the state can be liable only for facilities that are part of the State Plan of Flood Control. If the levee is outside that plan, the local district keeps the liability. In the 2003 Paterno case, the court held the state responsible because the levee was part of the project and homes were built behind it.

How to Calculate

Percent of Project Completed = (Transferred Miles ÷ Total Miles) × 100

  1. Find the number of miles that have been transferred from the federal government to the state.
  2. Find the total length of the project in miles (the statute says about 1,600 miles).
  3. Divide the transferred miles by the total miles.
  4. Multiply the result by 100 to get a percentage.

AI-generated — May contain errors. Not legal advice. Always verify source.

Official Source
View on CA.gov

§ 12645 Sacramento Flood Control History

The Legislature finds and declares all of the following: (a) In 1911, the Legislature adopted a flood control plan for the Sacramento Valley, as proposed by the federal California Debris Commission, and created the Reclamation Board to regulate levees and other encroachments, and to review and approve flood control plans for the Sacramento River and its tributaries. The state’s adoption of a valleywide flood management plan was intended to create a unified plan of flood control and to reclaim lands from overflow. Six years later, California gained congressional authorization for the United States Army Corps of Engineers (Corps) to collaborate with the state in building and maintaining the Sacramento River Flood Control Project. The federal government transferred completed portions of the Sacramento River Flood Control Project to the state as portions were completed, and the state, in turn, passed responsibility for operation and maintenance to local districts organized to provide flood control within their boundaries. (b) The state and federal governments have built or rebuilt levees, weirs, and bypasses to increase conveyance of flood waters downstream. The Sacramento River Flood Control Project and the federal-state flood control project in the San Joaquin Valley include approximately 1,600 miles of levees and other facilities to reduce central valley flood risk, now defined as the State Plan of Flood Control in subdivision (j) of Section 5096.805 of the Public Resources Code. The Corps often constructed federal “project levees” in both the Sacramento and San Joaquin River watersheds by modifying existing levees. The federal government transferred completed portions of the Sacramento River Flood Control Project to the state, as portions were completed, which in turn passed responsibility for operation and maintenance to local reclamation districts. (c) In 2003, a state Court of Appeal in Paterno v. State of California (2003) 113 Cal.App.4th 998 (Paterno), held the state liable, in a claim for inverse condemnation, for failure of a levee that was operated and maintained by a local levee maintenance district. In settlement of that litigation, the state’s liability was substantial because homes and a shopping center were built behind the levee and suffered from the resulting flood. (d) The Legislature has authorized funding for numerous flood control projects throughout the Sacramento and San Joaquin River watersheds. These statutory authorizations included varying provisions regarding responsibility and liability for operation and maintenance of the flood control facilities, and may or may not have incorporated the specified facilities into the federal-state Sacramento River or San Joaquin River flood control projects. After the court ruling in Paterno, the status of each flood facility became critically important to determining liability, and legal ambiguities led to questions about whether particular facilities were incorporated into a federal-state flood control project. In some cases, despite a location between two project levees, certain levees remain outside the jurisdiction of a federal-state flood control project, with local agencies retaining liability. (e) In 2006, California voters approved the Disaster Preparedness and Flood Prevention Bond Act of 2006, which authorized the issuance of general obligation bonds in the amount of $4.9 billion for flood protection and defined the Sacramento River and San Joaquin River federal-state flood control projects as the “State Plan of Flood Control.” The following year, the Legislature passed a package of bills to reform state flood protection policy in the central valley. These laws required the Department of Water Resources to develop, and the Central Valley Flood Protection Board to adopt, a Central Valley Flood Protection Plan, which is broader than the State Plan of Flood Control, affecting the entire watersheds of the Sacramento and San Joaquin Valley. These laws included provisions intended to limit state liability to facilities identified in the State Plan of Flood Control. These laws did not specifically address the facilities described in this article. (Amended by Stats. 2010, Ch. 328, Sec. 238. (SB 1330) Effective January 1, 2011.)

Last verified: January 11, 2026

Key Terms

liabilityadoptionconveyancecommissionclaimcorporationappealport

Related Statutes

  • § 12670.11 American River Flood Project
  • § 12670.22 Middle Creek Restoration Funding
  • § 12670.23 Hamilton City Flood Restoration Funding
  • § 1051 Water Rights Investigations
  • § 1058.5 Emergency Water Conservation Rules

References

  • Official text at leginfo.legislature.ca.gov
  • California Legislature. Water Code. Section 12645.
View Official Source