Central Utah Water Conservancy District (CUWCD) is responsible for operating the Central Utah Project (CUP) which conveys water through a network of facilities, to over 1.5 million people in Utah. This multi-reservoir system has hundreds of miles of conveyance systems to route water from the Colorado and Great Basins into collection facilities that deliver water to customers. That water needs to be tracked and accounted for to comply with the various management plans and water rights that govern the basins in which the CUP infrastructure is operated. This presents a unique set of challenges when operating and accounting for multiple categories of water in such a large, complex system while interfacing with customers, managers, and state regulators.

CUWCD has developed a suite of rule-based simulation models that utilize the physical and accounting capabilities of RiverWare. These models are used by CUWCD for backward-looking accounting, short-term operations, and long-term planning efforts. This presentation will describe the efforts put forth by CUWCD in integrating RiverWare into their management protocol highlighting the Utah Lake Jordanelle Exchange Model, a planning model that has been built for strategic planning of specific category of imported water that is stored in Utah Lake. Water imported from the Colorado Basin is accounted for in Utah Lake and allows for flexible and advantageous storage of system water according to the Utah Lake Management Plan. The Utah Lake Jordanelle Exchange Model was designed to plan and ask questions of different uses of, impacts of changing hydrology on, and other "what if" questions regarding the imported water and potential future changes in the system.