print Font Size: small font medium font large font

A1: Main Avenue and Madrone Pipelines Restoration

This project will restore the Main Avenue and Madrone pipelines to full operating capacity conveying 10 cubic feet per second (cfs) and 27 cfs, respectively, for a total of 37 cfs from Anderson Reservoir or the Santa Clara Conduit for groundwater recharge via the Main Avenue Recharge Ponds and the Madrone Channel. The project will plan, design and construct approximately 14,000 linear feet or 2.6 miles of 30- to 36-inch diameter pipeline and associated appurtenances.


  • Increases groundwater recharge by about 2,000 acre-feet per year in South County’s Llagas Groundwater Sub-basin, a sufficient water supply for 4,000 families of 5.
  • Improves operational flexibility.
  • Maximizes the delivery of imported water to treatment plants supplying drinking water to North County.
  • Saves energy, reduces operating costs, and cuts CO2 emissions by reducing dependence on Coyote Pumping Plant.

Project Status

(As of  September 2017)

  • The District Board approved the Engineer's Report and adopted the California Environmental Quality Act (CEQA) Mitigated Negative Declaration (MND) in May 2017.
  • The Project’s final design documents were completed in September 2017.
  • The Project’s construction contract advertisement occurred in September 2017 and award is scheduled to occur in October 2017.
  • The Project's construction is scheduled to begin in November 2017. 

Key Performance Indicators

  1. Restore transmission pipelines to full operating capacity of 37 cfs from Anderson Reservoir
  2. Restore ability to deliver 20 cfs to Madrone Channel

Priority A 200


FY17 Annual Report Status

StatusOn Target 
Project StartFY 2015
Project FinishFY 2019
Safe Clean Water
Program funding

$16.1 M**

(2015 Dollars)

**More financial information: 5-Year Implementation Plan, pages: 19-27

For more information: