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Stormwater Infrastructure Improvement Grants is a program from the State of California that funds multi-benefit stormwater management projects.
California's Proposition 1 Storm Water Grant Program allocated $200 million through the State Water Resources Control Board, supporting 25 planning projects totaling $10 million and 44 implementation projects totaling $180 million for green infrastructure, rainwater capture, and stormwater treatment facilities. Additional funding is available through the EPA's Sewer Overflow and Stormwater Reuse Municipal Grants program.
Eligible applicants include municipalities, public agencies, nonprofit organizations, public utilities, federally recognized Indian tribes, and mutual water companies in California.
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Storm Water Grant Program (SWGP) - Proposition 1 | California State Water Resources Control Board Storm Water Resource Plans Storm Water Grant Program (SWGP) - Proposition 1 Proposition 1 was approved in the November 2014 election. It added Water Code section 79747 to state law. $200 million of general obligation bonds were made available for multi-benefit storm water management projects.
All of the Proposition 1 funding has been allocated to projects. The State Water Board adopted guidelines for the Prop 1 Storm Water Grant Program in December 2015 (Resolution No. 2015-0076), and updated the guidelines in October 2019 .
Eligible applicants were 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. Planning – The program funded 25 projects for a total of $10 million to develop Storm Water Resource Plans (SWRPs) and project-specific planning projects.
Implementation – The program funded 44 projects for a total of $180 million of multi-benefit storm water management projects such as green infrastructure, rainwater and storm water capture projects and storm water treatment facilities. The US EPA awards Sewer Overflow and Stormwater Reuse Municipal Grants (OSG) Funding to states on an annual basis through 2026.
California has been awarded OSG Funding and is currently administering it through the CWSRF program. To apply for OSG Funding submit a CWSRF Application through the Financial Assistance Application Submittal Tool (FAAST) . A map and list of all Proposition 1 stormwater, groundwater, water recycling, wastewater and drinking water projects is available.
To view project application information, check status of the funding award, please visit FAAST . 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. 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.
For general inquiries, contact us at: Senior Water Resources Control Engineer Division of Financial Assistance State Water Resources Control Board Sacramento, CA 94244-2120 Grants and Loans Resources Water is a precious resource in California, and maintaining its quality is of utmost importance to safeguard the health of the public and the environment.
Report an Environmental Concern Request Language Services Solicitar Servicios Lingüísticos Wastewater Arrearage Payment Abbreviations and Acronyms Opportunities for Public Participation Frequently Asked Questions Website Accessibility Certification The California Water Boards include the State Water Resources Control Board The State Water Board is one of six environmental entities operating under the authority of the California Environmental Protection Agency
Based on current listing details, eligibility includes: Municipalities and municipal entities in California. Applicants should confirm final requirements in the official notice before submission.
Current published award information indicates Varies Always verify allowable costs, matching requirements, and funding caps directly in the sponsor documentation.
The current target date is rolling deadlines or periodic funding windows. Build your timeline backwards from this date to cover registrations, approvals, attachments, and final submission checks.
Federal grant success rates typically range from 10-30%, varying by agency and program. Build a strong proposal with clear objectives, measurable outcomes, and a well-justified budget to improve your chances.
Requirements vary by sponsor, but typically include a project narrative, budget justification, organizational capability statement, and key personnel CVs. Check the official notice for the complete list of required attachments.
Yes — AI tools like Granted can help research funders, draft proposal sections, and check compliance. However, always review and customize AI-generated content to reflect your organization's unique strengths and the specific requirements of the solicitation.
Review timelines vary by funder. Federal agencies typically take 3-6 months from submission to award notification. Foundation grants may be faster, often 1-3 months. Check the program's timeline in the official solicitation for specific dates.
Many federal programs offer multi-year funding or allow competitive renewals. Check the official solicitation for continuation and renewal policies. Non-competing continuation applications are common for multi-year awards.
EPA is seeking insightful, expert, and cost-effective applications from eligible applicants to provide the Chesapeake Bay Program’s non-federal partners with technical analysis and programmatic evaluation support related to water quality modeling and monitoring and spatial systems to manage, analyze, and map environmental data. The project assists the partners in meeting their restoration and protection goals and in increasing the transfer of scientific understanding to the Chesapeake Bay Program modeling, monitoring, and Geographic Information Systems (GIS) activities. The recipient will support modeling, monitoring, and GIS programs needed to explain and communicate the health of and changes in the Chesapeake Bay ecosystem. Funding Opportunity Number: EPA-R3-CBP-23-18. Assistance Listing: 66.466. Funding Instrument: CA. Category: ENV. Award Amount: Up to $5.3M per award.
Small Business Innovation Research (SBIR) Program Phase I is sponsored by U.S. Environmental Protection Agency (EPA). The EPA SBIR Phase I Solicitation invites small businesses to submit proposals for projects addressing critical environmental challenges. Awards are for six months to demonstrate proof of concept. Key focus areas include Clean and Safe Water, Air Quality and Climate, Homeland Security, Circular Economy/Sustainable Materials, and Safer Chemicals.
Environmental and Climate Justice Community Change Grants Program (CCGP) is sponsored by U.S. Environmental Protection Agency (EPA). The Community Change Grants Program funds projects that provide meaningful improvements to the environmental, climate, and resilience conditions affecting disadvantaged communities. While broadly focused on environmental and climate justice, projects can include aspects that relate to community health and well-being through addressing environmental health risks. The program aims to fund community-driven pollution and climate resiliency solutions and strengthen communities' decision-making power. Applications are accepted and reviewed on a rolling basis.