Title
Agreement with Salt River Project and Others to Share Costs Associated with Pilot Study to Operate Flood Control Space at Modified Roosevelt Dam (Ordinance S-47810)
Description
Request to authorize the City Manager, or his designee, to enter into an agreement with the Salt River Valley Water Users’ Association and Salt River Project Agricultural Improvement and Power District and others (Parties) to share the costs of obtaining approval and conducting a temporary deviation of the dam operating rules to allow the Parties to extend the time water can be retained in the Flood Control Space of Modified Roosevelt Dam, making that water more available to the Parties. Further request to authorize the City Controller to disburse all funds related to this item. Phoenix’s share of the cost will be proportional to Phoenix’s allotted share of the temporary deviation water in the Flood Control Space, which amount will not exceed $276,150.
Report
Summary
SRP will seek approval from the United States Army Corps of Engineers (Corps) and the United States Bureau of Reclamation (BOR) to authorize Salt River Project (SRP) to operate the flood control space in the Modified Roosevelt Dam (FCS) under a Temporary Deviation Plan. Under the Temporary Deviation Plan, SRP may retain spill water in the FCS for up to 120 days and deliver it proportionately to the parties to this Agreement. Under the Agreement, Phoenix will receive an 18 percent share of the available FCS, which represents up to 20,000 acre-feet of water from the Salt River. The Temporary Deviation will operate as a pilot for five years during which time SRP can retain the spill water once a year for a maximum of three years during the total five-year period.
SRP estimates it will cost $1,211,549 for SRP to complete the work necessary to seek and obtain approval and authorization for the Temporary Deviation Plan. An additional 20 percent contingency has been added to this amount. These costs include planning costs, technical evaluation and environmental and cultural resources compliance. Phoenix’s cost share is proportional to the volume of water it will receive (18 percent of total FCS capacity), or a maximum of $276,150. Other parties participating in this Agreement are: the cities of Avondale, Chandler, Glendale, Mesa, Peoria, Scottsdale and Tempe; the Town of Gilbert; Roosevelt Water Conservation District; Buckeye Water Conservation and Drainage District; Salt River Pima-Maricopa Indian Community; Roosevelt Irrigation District; and Freeport Minerals Corporation.
Contract Term
The Agreement will terminate when a Temporary Deviation Plan is approved by the Corps and BOR and when the last funds are transferred from the other Parties to SRP. In the event the Corps and BOR do not approve the Temporary Deviation Plan, the Parties may terminate the Cost Share Agreement.
Financial Impact
The value of the Agreement is not to exceed $276,150.
Funding for this agreement is available in the Water Services Department’s Capital Improvement Budget.
Location
Roosevelt Dam
Council District: Out of City
Department
Responsible Department
This item is submitted by Deputy City Manager Karen Peters and the Water Services Department.