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Storm Water Grant Program (SWGP) - Proposition 1 (Prop 1)

Prop 1 SWGP Background

Prop 1 (Assembly Bill 1471, Rendon) authorized $7.545 billion in general obligation bonds for water projects including surface and groundwater storage, ecosystem and watershed protection and restoration, and drinking water protection. The State Water Board will administer Prop 1 funds for five programs. Of the $7.545 billion, Prop 1 (Section 79747) provides $200 million in grant funds for multi-benefit storm water management projects.

Water Code section 79747 identifies funds available for multi-benefit storm water management projects which may include, but shall not be limited to: green infrastructure, rainwater and storm water capture projects and storm water treatment facilities. Storm Water Resource Plans, or functionally equivalent plan(s), are required to obtain grant funds for storm water and dry weather capture projects.

Announcements | Funding Information | Funded Projects | Storm Water Resource Plan and Concurrence Review Process | Reference Material | Contact Information


Funding Information

Eligible Applicants:

Public agencies, nonprofit organizations, public utilities, federally recognized Indian tribes, state Indian tribes listed on Native American Heritage Commission's California Tribal Consultation List, and mutual water companies.

Eligible Project Types:

Planning - Development of Storm Water Resource Plans (SWRPs) that meet the requirements of Water Code section 10562 and the SWRP Guidelines, and project-specific planning projects. Applications for SWRPs and project-specific planning projects were only solicited for Round 1.

Implementation - Multi-benefit storm water management projects which may include, but shall not be limited to, green infrastructure, rainwater and storm water capture projects and storm water treatment facilities.

Funding Available:

Planning Grants: ~$10 million awarded
Round 1 Implementation Grants: ~$80 million awarded
Round 2 Implementation Grants: ~$90 million available

Funding Source:

Proposition 1

Loans or Grants:


Application Solicitation Period:

Planning and Implementation Round 1: CLOSED
Implementation Round 2 Opens: March 2020 (Estimated)
Implementation Round 2 Closes: June 2020 (Estimated)

Program Guidelines:

Storm Water Resource Plan Guidelines (adopted on December 15, 2015 - Resolution No. 2015-0077)
Appendix A: Checklist and Self-Certification (Word Document)
Appendix B: Useful Web Links
Round1: Storm Water Grant Program Guidelines (adopted on December 15, 2015 - Resolution No. 2015-0076)
Round 2: see "Announcements" above

Funded Projects

For information regarding projects funded by the SWGP, please refer to the online Financial Assistance Application Submittal Tool (FAAST) to view project application information, check status of the funding award etc. If further assistance is needed, please contact the SWGP staff.  

Storm Water Resource Plans and Concurrence Review Process

For information related to the Storm Water Resource Plans (SWRPs) visit the SWRP webpage. The SWRP web page also includes a list of SWRPs and FE-SWRPs that the State Water Board’s Division of Financial Assistance has reviewed and concurred with.

Reference Materials

    A webinar was held on September 16, 2019. The webinar consisted of a summary of proposed changes to the program guidelines for Round 2, and staff responses to questions submitted by attendees.

    Sacramento State Office of Water Programs designed a California Phase II LID Sizing Tool through a Prop 84 SWGP Planning Grant. The Sizing Tool can be used to assist in selecting and sizing LID BMPs that meet the sizing requirements in the statewide Phase II MS4 permit.

    The International Stormwater Best Management Practices (BMP) Database project website features a database of over 530 BMP studies, performance analysis results, tools for use in BMP performance studies, monitoring guidance and other study-related publications.

    Contact Information

    For general inquiries, contact us at:

    Daman Badyal, P.E.
    Senior Water Resources Control Engineer
    Storm Water Grant Program
    (916) 319-9436

    Division of Financial Assistance
    Storm Water Grant Program
    State Water Resources Control Board
    P.O. Box 944212
    Sacramento, CA 94244-2120

    letter  Sign up for the Storm Water Grant Program email list ("Financial Assistance" section).


  (Page last updated 01/10/2020)