New Culvert Projections for Washington State: Improved Modeling, Probabilistic Projections, and an Updated Web Tool

Abstract

This report marks the third phase in a multi-phase project. We developed new streamflow projections, using new dynamically downscaled projections, which are expected to better capture changes in climate at the local level than the statistically downscaled projections used in phases one and two. These new projections, and a new approach to estimating the probability of structure failure, are currently being incorporated into a major update of the Fish and Wildlife tool.