This document is intended for policymakers so they can make informed decisions about upgrading or removing tide gates in an effort to improve conditions for Oregon’s native migratory fish and other animals and plants that inhabit estuaries. It has two main sections: The first includes an overview of the technical aspects of tide gates, including non-traditional ones. The second contains findings from a review of scientific literature about upgrading or removing tide gates as well as conclusions from a review of estuary restoration projects involving tide gates. Based on those findings, recommendations to guide future investments in, and monitoring of, restoration projects associated with tide gates are included.

Jon Souder, Guillermo Giannico
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14 pages