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    • 2016 Riverwalk Results November 17, 2016
      2016 Riverwalk Results Results from the 2016 Santa Ana Riverwalk, which was conducted on October 6, 2016, have been uploaded into the annually updated Riverwalk Atlas. The Atlas provides a map-based summary of the data collected during the annual survey […] […]
    • 2015 Riverwalk Results May 24, 2016
      2015 Riverwalk Results Results from the Santa Ana Riverwalk have been documented in the annually updated Riverwalk Atlas. The Atlas provides a map-based summary of the data collected during the annual survey event. The data reflected in the Atlas has […] […]

SAWPA’s Strategic Plan

The Santa Ana Watershed Project Authority (SAWPA) is a joint powers authority comprised of five member agencies:


agencies Eastern Municipal Water District
agencies Inland Empire Utilities Agency
agencies Orange County Water District
agencies San Bernardino Valley Municipal Water District
agencies Western Municipal Water District

Please note new Department of Industrial Relations requirements regarding the Public Works Contractor Registration Program:


Request for Proposal for Consulting Services for Santa Ana River Waste Load Allocation Model Update

The Santa Ana Watershed Project Authority (SAWPA) requests proposals from qualified consultants to update, calibrate, and apply the Wasteload Allocation Model (WLAM) to estimate projected TDS and Nitrate-N concentrations of the Santa Ana River recharge water and discharge at Prado Dam. Proposals are due to SAWPA by 5:00 pm on Tuesday, December 6, 2016.

RFP Document - Link Updated 11/23/2016 (Includes Appendix A and Appendix X)

RFP WLAM Addendum - posted 11/28/2016

Posted 11/7/2016


BID CLOSED – Inland Empire Brine Line Reach V Rehabilitation and Improvement Project – Phase 2

Sealed Bids for construction of the Inland Empire Brine Line Reach V Rehabilitation and Improvement Project – Phase 2, addressed to Santa Ana Watershed Project Authority (Owner), will be received at the office of the General Manager, 11615 Sterling Avenue, Riverside, CA 92503, until 10:00 a.m. local time, on the 21st day of January 2016, and will be publicly opened and read aloud. Any Bids received after this specified time and date will not be opened or considered.

Bidding Documents may be purchased from the Owner’s office for $60. Prospective bidder shall visit SAWPA office, and must call Zyanya Blancas to register at (951) 354-4220 or email her at

A NON-MANDATORY (attendance is highly recommended) pre-bid conference will be held on January 6, 2016 at 2:00 p.m. at the SAWPA office, 11615 Sterling Avenue, Riverside, CA 92503.

Bid Opening Results

Invitation to Bid

Addendum 2

Addendum 1

Reach V  Phase 2 Bid Specifications

Reach V Phase 2 Bid Drawings

Planholder List - Last updated 1/18/2016



Inland Empire Brine Line

  • The Inland Empire Brine Line was damaged around 11 p.m. Monday, June 13, by construction work at the intersection of Cajalco and Temescal Canyon roads, causing a leak. The Santa Ana Watershed Project Authority quickly stopped the leak, contained the liquid, repaired the pipe, and cleaned up the area. The leak posed no public health risk, overnight traffic disruption was modest, and the Brine Line is back in normal service.
  • In August 2014, SAWPA issued a notice inviting bids for construction of the Inland Empire Brine Line Reach V Rehabilitation and Improvement Project On October 21, 2014, SAWPA awarded the construction of the project to Charles King Company.  The total contract amount is $12,561,000.  A notice to construct was issued to the contractor in January 2015.  The construction duration is 14 months and is anticipated to be complete in early 2016.    Funding for the Project is through the California State Water Resources Control Board Clean Water State Revolving Fund Loan Program. Click here to learn more about this project

One Water One Watershed (OWOW)

  • OWOW 2015 Implementation: The $64 million Proposition 84 Integrated Regional Water Management (IRWM) grant application submitted to the State in 2015 was fully funded. SAWPA and the project proponents are working on executing individual funding contractors to distribute the $64 million. See the State’s funding map.
  • OWOW 2014 Implementation: Implementation of the $22 million Emergency Drought Grant Program, a watershed-wide water use efficiency effort is now being planned through the Project Agreement (PA) 22 Committee. The PA 22 Committee, composed of the regional water agencies in the Santa Ana River Watershed, is planning the implementation of the program which will include watershed aerial imagery, tools and support for retail water agencies to develop conservation-based water rates, web-based and informational tools to encourage conservation, and turf replacement.  See the OWOW webpage for more information.
  • OWOW Round 2 Implementation: The Proposition 84 IRWM Implementation Round 2 Grant Agreements have been executed between the project proponents and SAWPA. The projects funded are being implemented throughout the watershed.

Holiday Hours

We are closed from December 23rd to January 2nd for the holidays  The SAWPA team is combining vacation days and holidays to maximize our time with family and at the same time  be energy efficient. We are able to minimize electricity and heat for our building and reduce our carbon foot print commutes! Happy Holidays from our family to yours. See you in the New Year!

Clime/Greenhouse Gas Tools

From the Water Blog

  • SAWPA Video