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Utilities Presentations
Presentations given by Utilities Division staff
2016 Water Commission Topic - How Low Can We Go; How Low Should We Go
Staff is presenting a series of presentations to the Water Commission regarding setting water conservation goals for the community. The community has seen much success in improving water efficiency over time. These include changes made through rates & rate structure, plumping codes, behavior, ordinance, and supply-side efficiencies in water production, metering, and distribution. Water conservation is still seen as a water supply, in that the less water that's developed out of the aquifer, the longer until more costly water supplies are needed. The original three-part presentation outline was broken into shorter presentations as dialogue between the commission and staff occurred. The presentations are on 1) Program History, 2) Program Analysis, 2a) Metrics, 2b) Policy & Lifestyle, 2c) Rate Futures, 3) Policy Questions. The commission videos are archived here: http://www.flagstaff.az.gov/index.aspx?NID=1461

Conversations during the commission meetings resulted in a modification of the Part 1 presentation. The modified powerpoint was added to the end of the Part 2 presentation in January.

Part 1 - November 19, 2015 (these may take several minutes to download)
Part 2 - January 21, 2016
Part 2a - February 18, 2016
Part 2b - Policy & Lifestyle Date, TBD

Other 2016 topics in front of the Water Commission include the following:
Conserve 2 Enhance Community Water Conservation Program
A review of the Residential Water Audit Program to date
Introduction to the Flagstaff Well Siting Study
Results of Utilities Communication Plan

Update on the City's most recent groundwater flow modeling work; note the information contained in this presentation is DRAFT
The most recent groundwater flow modeling work was conducted as part of a $300,000 grant received from the US Bureau of Reclamation to look at possible impacts to sensitive habitat should the City and/or the Navajo Nation pump groundwater from beneath their properties east of Flagstaff. The Red Gap Ranch-Leupp Groundwater Flow Model final report can be obtained by visiting the Documents link. In this talk (note that the 25 MB file may take some time to download), Erin Young provided an updated of this project to the Arizona Hydrological Society at the Annual Symposium on September 18, 2015. The entire project covered under this grant was completed in December of 2015.

Water Resources & Water Conservation Program Updates (May 12, 2015)
Erin Young, Water Resources Manager, discussed the City's status on the topics of water conservation, water supply & demand, resiliency & preparedness, and public outreach (click here to view the presentation).

Plenary Session Presentation AHS/AIPG meeting (September 15 & 16, 2014)
Utilities Director, Brad Hill, was asked to open the Arizona Hydrological Society/American Institute of Professional Geologists meeting with a plenary presentation.  His talk was on the history of Flagstaff's water supplies and where Flagstaff is now from the Director's standpoint (click here to view the presentation).

Reclaimed Water Presentation (February 6, 2014)

Utilities Director Brad Hill, R.G., gave a presentation on “Water Reuse – where we have been and where we are going (Nationally, State & Flagstaff)” in February, 2014.  The presentation was sponsored by the Friends of the Rio de Flag & Friends of Flagstaff’s Future (click here to view the presentation). 

The City of Flagstaff is one of the state’s leaders in treatment and use of reclaimed water.  The City recycles over 700 million gallons of water each year for conservation purposes.  Recycling means wastewater that is sent from our homes or business to a treatment plant where it is highly treated to meet state and federal reclaimed water quality standards. Once treated, the water is termed “reclaimed water, recycled water, water reuse or effluent” and enters a separate distribution system after being chlorinated.  The City has been recycling water for over 20 years and currently approximately 20% of our community’s total water use is from direct delivered reclaimed water for irrigation, commercial and other uses.  Additionally, the Rio de Flag plays an important role in recharging our underground aquifers from the remaining unused reclaimed water being discharged into the normally dry river and infiltrating underground or sustaining valuable riparian habitat.

The presentation covered the history and importance of reclaimed water on a national basis and within Flagstaff, how that supply is used in Flagstaff, how it contributes to our successful water conservation efforts and how that supply provides resiliency in the face of future climate change.  Additionally, the presentation then discussed the future of reclaimed water both nationally and in Flagstaff by discussing upcoming hot topics such as unregulated Compounds of Emerging Concern and how the utility industry is developing treatment technologies to remove them.

City of Flagstaff Designation of Adequate Water Supply

On January 28, 2014, Erin Young gave a presentation to the Northern Arizona University School of Earth Sciences & Environmental Sustainability seminar series.  The talk was titled Growth and Water Supplies: City of Flagstaff Designation of Adequate Water Supply.  In April of 2013, the City of Flagstaff received a Designation of Adequate Water Supply from the Arizona Department of Water Resources.  The designation defines the sources of legally and physically available water to the City for at least 100 years. The physical supply had to be proven with a groundwater flow model of the region. The focus of the presentation is on the physical availability determination, including the model that was used to prove the water supplies and the growth scenarios modeled and model results. Click here to view the power point presentation.

Water Resources Presentation (October 3, 2013)
Water Resources Manager Erin Young, R.G.  gave a presentation on Our Water Future, Water Resources Chapter of Utilities Integrated Master Plan in October, 2013.  The presentation was sponsored by Friends of the Rio de Flag & Friends of Flagstaff’s Future.  (click here to view the presentation).  The master planning effort estimates the City will have to provide an additional 12,000 acre/feet of potable water to meet the future needs of its citizens as Flagstaff grows over the next 80 – 100 years. This is above and beyond the ~10,500 AF/year the City already deliveries to meet our community’s needs. Questions such as where will that water come from, how will it get here, how resilient is the City’s water resources to prolonged drought, what are projections of population growth and how are our future water needs determined are continually being asked within the community. The master planning effort also conducted an economic analysis to help evaluate the comparative costs of the future water supply alternatives identified.  To help answer these questions and many more, the Utilities Division completed a draft Water Resources Master Plan in April 2011.