In an effort to improve the coordination and transparency of water management operations within the Upper Colorado River basin, Eastern Colorado Area Office (ECAO) is proposing to develop a Web-Based Decision Support System (DSS). The DSS would enable real-time sharing of a visual representation of the Upper Colorado River as it responds to actual and anticipated reservoir releases, diversions and return flows. The proposed DSS would provide a tool for immediately assessing and visually displaying the aggregate effects of operational changes at key locations within the basin.