In the Klamath basin in Oregon and California, the U.S. Bureau of Reclamation (Reclamation) must balance irrigation and water supply demands, environmental flow targets, flood control limitations, and other operating objectives. The team uses a suite of tools for day-to-day operations, mid-term forecasting and long-range planning that consists of multiple spreadsheets, a long-term planning model implemented in the Water Resource Integrated Modeling System (WRIMS), and many files to transfer data. Although the tools are powerful, Reclamation has the need for a more streamlined and maintainable toolset. We present a decision support tool called the Klamath Planning and Operations Model (KPOM) that combines all of these into a single model, implemented in RiverWare. This unified tool provides easier transitions between modes, improved data management, transparency, and maintainability. We show how the tool can be used for tracking observed flows and volumes, projecting operations, and long-term planning. We will describe the various modes and functionality and how scripts are used to change between modes quickly and efficiently. A key functionality added to the operations mode is the ability to automate scenario analysis to try different inputs and forecast settings. For planning mode, the use of an iterative solution coupled with multiple hydrologic traces provides for probabilistic and uncertainty analysis. We’ll show how the KPOM user interface provides direct plotting, data visualization, output reports and database connections. Finally, KPOM was tested against the existing set of tools and can reproduce the results given the same operating policies and inputs.
