Creating and Evaluating CRSS Metrics that Report Conditions for Native Fish of the Grand Canyon

The purpose of this report is to address and analyze the native fish populations below the Glen Canyon Dam in the Colorado River Basin. As aridification of this basin continues Lake Powell water storage elevations plummet resulting in negative consequences for native fish species. CRSS will be utilized to model a strategy for outflow release that will optimize conditions for native fish. The rule created in this project will be placed as priority for outflow releases. This rule would be implemented to maintain the status quo of native fish populations as the Colorado River Basin’s recent unprecedented hydrologic conditions persist.