Red Gap Ranch Pipeline

Building a pipeline to import groundwater supplies from Red Gap Ranch

In 2005, the City purchased Red Gap Ranch through a voter-approved bond process. Located about 40 miles east of Flagstaff, Red Gap Ranch overlies aquifers that can substantially increase our water supply and help diversify our supply sources.

The City hired JACOBS Engineering to assess the feasibility of constructing a pipeline to this property. The study will define the optimal pipeline alignment and identify requirements for the conceptual design, right-of-way, and environmental regulatory (federal, state, and tribal). It will also estimate costs associated with constructing, operating, and maintaining the pipeline. The feasibility study will outline ways to achieve these goals with the lowest cost, least community impact, least environmental impact, and least risk.

Phase 1 of the three-phase study was complete in 2009. Phase 2 work was halted in 2009 because of issues related to obtaining right-of-way (ROW) access with various entities.

In July 2014, after 5 years of discussions with various agencies and government entities, the City attended a meeting with the Arizona Department of Transportation (ADOT) and the Arizona Department of Water Resources (ADWR). During this meeting, ADOT agreed to work with us to complete the feasibility study and develop an Intergovernmental Agreement (IGA) that identifies the necessary steps for permitting the construction and maintenance of a waterline within the ADOT ROW of Interstate 40. This conversation was memorialized in a letter from the director of ADOT to the Mayor on December 31, 2014 (PDF). The City plans to complete Phase 2 as soon as possible to develop a cost estimate.

Project Documents