Previous Integrated Regional Watershed Plans.

The 2005 IWP Update was prepared by SAWPA and adopted by the SAWPA Commission in June 2005. This document provides updates to projects that are important to successfully continuing the Integrated Watershed Program in the Santa Ana River Watershed.

In 2002, SAWPA developed a multi-phased planning process called the Integrated Watershed Plan (IWP). This Plan has three components: the SARI Planning Study, the Integrated Water Resources Plan, and the Environmental & Wetlands Component. This Plan is closely related to the Southern California Integrated Watershed Program (SCIWP); click here to get more information on the SCIWP.

The Water Resources Plan was first written in 1998 to provide a watershed-wide evaluation of water supply needs and plans for projects that would support meeting these needs. This activity is designed to update the 1998 Water Resources Plan to optimize the use of all water resources in the Santa Ana River watershed, integrate the watershed planning effort with Metropolitan Water District's Integrated Resources Plan Update, and provide descriptions of future projects within the Santa Ana River watershed. The current SAWPA Water Resources Plan was initiated in fiscal year (FY) 1994-1995 and was completed in FY 1997-1998. The benefit of this project was the development of a single document that combines the demands and available resources for all the member agencies to help resolve anticipated future shortages in the watershed. It is necessary that the information be updated to assure current regional planning alternatives using the latest data possible. The document was designed to:

*Gather existing and projected water demand and supply data from member districts.

*Determine potential local and regional projects to optimize available water resources.

*Integrate watershed planning with Metropolitan Water District Integrated Resources Plan Update.

*Provide descriptions of future local and regional projects, and participate in and support the Santa Ana River Dischargers Association.

*Compile information into a single document.

The Plan was based on the 2000-2001 population, water demand, and water supply information as the project baseline, and then planning horizons were developed for 2025 and 2050.

SAWPA owns capacity rights or owns outright approximately 93 miles of pipeline known as the Santa Ana Regional Interceptor (SARI) Line. Construction on this pipeline began in the 1970's and has had several additions up through the year 2001. This planning study reviews the use of the line, maintenance, costs, and provides recommendations for future actions.