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Fish Barriers are man made structures that create an impediment to upstream adult salmonid migration. Fish Barriers are identified in the field and are evaluated for migration impediment by City of Redmond scientists. Coordinates are collected using hand held GPS collection devices in fields, with all coordinates collected on the stream at the downstream end of the barrier. All attributes are collected and populated according to the Washington Department of Fish and Wildlife's “Fish Passage Inventory, Assessment, and Prioritization Manual” (https://wdfw.wa.gov/publications/02061). |