Projects Worked On
In collaboration with the Public Policy Institute of California and other researchers, the Center prepared California Water Myths—a report highlighting eight common water myths, focusing on water supply, ecosystems and legal and governance issues. In providing information to combat these myths, the study establishes a more informed approach to water policy and management in California.
Interdisciplinary teams of Center scientists are investigating the causes for the decline of salmon and steelhead in Shasta River, historically one of the most productive tributaries in the lower Klamath Basin. A large spring complex (Big Springs Creek) provides the majority of its water, particularly during the summer.
This study compares commonly used methods of defining habitat suitability criteria and applying those to instream flow models for R. boylii in the Sierra Nevada of California. First, regional habitat suitability criteria (HSC) are developed using standard univariate and multivariate techniques, and the predictive performance and transferability of different HSC methods are evaluated. Second, three of the most commonly used instream flow assessment techniques are evaluated: (1) one-dimensional habitat modeling, (2) two-dimensional hydrodynamic modeling, and (3) expert habitat mapping (judgement-based mapping by species experts). A comparison table is provided to aid resource managers in selecting the most appropriate habitat assessment method for R. boylii given the specific conditions of a hydropower relicensing project.