Meeting Calendar - View Agendas and Minutes

Documents

• 2020 Urban Water Management Plan
• 2020 Lopez Dam Flooding and Evacuation Brochure
• 2019 Zone 3 (Lopez Water Project) Information Brochure
• Zone 3 Water System Map
• Zone 3 Boundary Map
• Low Reservoir Response Plan 2014
• Zone 3 Watershed Sanitary Survey
• Water Quality Information
• Zone 3 Advisory Committee Meeting Schedule
• 2022 CEQA Negative Declaration for Lopez Water Project Contract Changes

Cloud Seeding Program for Lopez Lake Information

The County of San Luis Obispo Flood Control and Water Conservation District (District) recently initiated Year 2, of a potential 3-year program of the Winter Cloud Seeding Program for Lopez Lake (project). The project objective is to increase precipitation in the Lopez Lake watershed during winter precipitation events. The seeding program will use a combination of ground-seeding sites and aircraft.

Lopez Dam Safety Information

Haga clic aquí para obtener Información de Seguridad de la Presa Lopez en Español

The Lopez Dam Flooding and Evacuation Brochure provides a simplified map showing areas that would be flooded in the unlikely event of a dam failure and provides tips on how to prepare yourself and family for an emergency.

The Department of Safety of Dams inspects Lopez Dam and the Terminal Reservoir Dam annually for any safety issues, if any items are noted on the inspection they are then corrected by the San Luis Obispo County Flood Control and Water Conservation District who owns and operates the dam. As an example, in 2002 Lopez Dam underwent a seismic retrofit project to meet current seismic standards.

The Oroville Dam spillway disaster in northern California that began in February of 2017 called attention to the need for all dams to have updated inundation maps and emergency action plans, not just for dam failures but spillway failures as well.  The State Legislature passed SB92 that went into effect on July 1, 2017 and added new sections to the Water Code requiring owners of all state jurisdictional dams, except low hazard dams, to prepare inundation maps.

The below documents are the results of the updated inundation studies and corresponding detailed mapping for both the Lopez Dam and Terminal Reservoir Dam.

Lopez Dam Failure Inundation Mapping and Study

• Lopez Dam Failure Inundation Study Dec 2017
• Lopez Dam Failure Inundation Overview and Detail Maps
• Lopez Spillway Failure Inundation Overview and Detail Maps
• Comparison of 1999 maps vs 2017 maps

Lopez Terminal Reservoir Dam Failure Inundation Mapping and Study

• Terminal Dam Failure Inundation Study Dec 2017
• Terminal Dam Failure Inundation Overview and Detail Maps

Lopez Water Project Habitat Conservation Plan (HCP)

• Arroyo Grande Creek HCP FAQs
• Arroyo Grande Creek HCP Process Timeline
• Interim Downstream Release Schedule (2007)
• HT Harvey AG HCP Peer Review (2011)
• HT Harvey AG HCP Scope of Work (2011)
• ECORP AG HCP Scope of Work (2014)
• Upper AG Basin Habitat Suitability Index 2011

Reservoir Water Data

Membership

The Zone 3 Advisory Committee is comprised of one representative from each water contractor, one representative from agriculture, and one member at large appointed by the Board of Supervisors. Please see the bylaws for other details of member qualifications and member terms.