San Diego Integrated Regional Water Management

Integrated Regional Water Management (IRWM) is a relatively new initiative, aimed at developing long-term water supply reliability, improving water quality, and protecting natural resources. The Statewide IRWM Program is supported by bond funding provided by the California Department of Water Resources (DWR) to fund competitive grants for projects that improve water resources management.
The San Diego IRWM Program began in 2005 as an interdisciplinary effort by water retailers, wastewater agencies, stormwater and flood managers, watershed groups, the business community, tribes, agriculture, and non-profit stakeholders to improve water resources planning in the San Diego IRWM Region. The program has achieved remarkable success! In 2007, San Diego published its first IRWM Plan and received $25 million from DWR to support 19 high-priority water management projects. In 2011, San Diego obtained another $8 million to support 11 more important projects and $1 million to fund a comprehensive update of the 2007 IRWM Plan. The San Diego Region is currently updating the 2007 San Diego IRWM Plan to comply with DWR's 2012 IRWM Program Guidelines, improve the content, and make the Region eligible for future rounds of grant funding. The 2007 IRWM Plan provided a mechanism for: 1) coordinating, refining and integrating existing planning efforts within a comprehensive, regional context; 2) identifying specific regional and watershed-based priorities for implementation projects; and 3) providing funding support for the plans, programs, projects and priorities of existing agencies and stakeholders. The 2013 IRWM Plan Update allows regional stakeholders to revisit the Plan goals, objectives and priorities in light of changes that have occurred since 2007.

The San Diego County Water Authority, City of San Diego, and County of San Diego originally formed the Regional Water Management Group (RWMG) to fund, guide, and manage development of the 2007 IRWM Plan. The RWMG is now responsible for the day-to-day administration and implementation of the San Diego IRWM Program. The RWMG meets bi-weekly to research, review, discuss, and formulate ideas and concepts for IRWM Plan implementation activities. Additionally, the RWMG provides presentations to various stakeholder groups including water supply agencies, environmental organizations, and other agencies regarding the IRWM Program.


  • City of San Diego
    • Cathy Pieroni
    • Principal Water Resources Specialist
    • Water Resources and Planning Division
    • Water Department
    • City of San Diego
    • 600 B Street, Suite 600
    • San Diego, CA 92101
    • 619-533-6612
  • County of San Diego
    • Sheri McPherson
    • Land Use/Environmental Planner III
    • Watershed Protection Program
    • Department of Public Works
    • County of San Diego
    • 9325 Hazard Way
    • San Diego, CA 92123
    • 858-495-5285
  • Grant Administration
    • Loisa Burton
    • Grant Administrator
    • San Diego County Water Authority
    • Water Resources Department
    • 858-522-6739

Contact San Diego Integrated Regional Water Management

Contact San Diego Integrated Regional Water Management

Mark Stadler, San Diego County Water Authority
Principal Water Resources Specialist
4677 Overland Avenue
San Diego, California  92123
Phone: 858-522-6735


Service Area

Services provided in:
  • San Diego County, California