A new water management program is being proposed for the Trinity River to help dwindling salmon populations. The Yurok Tribe helped develop the plan through its participation in the Trinity River Restoration Program (TRRP), which is comprised of tribal, state, and federal agencies, and then submitted it to the Bureau of Reclamation for approval where it currently lies. The new water release plan will shift some of the water normally released from Lewiston Dam in late spring to the winter and early spring, which will create conditions that more closely mimic a free-flowing river. The Yurok Fisheries Department contributed to and thoroughly analyzed this proposal to manage the Trinity “in a more holistic manner,” the Tribe noted. This is one of the biggest, recent opportunities to facilitate positive change on the Trinity.
According to the Yurok Tribe, “the current flow management plan creates artificial river conditions that diminish juvenile salmon’s ability to recognize natural cues to migrate to the ocean. By the time the fish out-migrate, the Klamath is too warm and water quality is extremely poor.”
Currently, the Trinity River wild salmon and steelhead populations are a small fraction of their former size. This flow plan is a step in the right direction to establishing the river into a more natural state and restoring critically important fish runs. Elevating the winter and early spring flows when fish are rearing in the upper Trinity will greatly improve the river environment for salmon, as well as every other species that evolved in the Trinity River watershed.
Read the Goals and Objectives of the Winter Variability Proposed Action from TRRP.
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Peter Moyle is the Distinguished Professor Emeritus in the Department of Wildlife, Fish and Conservation Biology and Associate Director of the Center for Watershed Sciences, at UC Davis. He is author or co-author of more than 240 publications, including the definitive Inland Fishes of California (2002). He is co-author of the 2017 book, Floodplains: Processes and Management for Ecosystem Services. His research interests include conservation of aquatic species, habitats, and ecosystems, including salmon; ecology of fishes of the San Francisco Estuary; ecology of California stream fishes; impact of introduced aquatic organisms; and use of floodplains by fish.
Robert Lusardi is the California Trout/UC Davis Wild and Coldwater Fish Researcher focused on establishing the basis for long-term science specific to California Trout’s wild and coldwater fish initiatives. His work bridges the widening gap between academic science and applied conservation policy, ensuring that rapidly developing science informs conservation projects throughout California. Dr. Lusardi resides at the UC Davis Center for Watershed Sciences and works closely with Dr. Peter Moyle on numerous projects to help inform California Trout conservation policy. His recent research interests include Coho salmon on the Shasta River, the ecology of volcanic spring-fed rivers, inland trout conservation and management, and policy implications of trap and haul programs for anadromous fishes in California.
Patrick Samuel is the Conservation Program Coordinator for California Trout, a position he has held for almost two years, where he coordinates special research projects for California Trout, including the State of the Salmonids report. Prior to joining CalTrout, he worked with the Fisheries Leadership & Sustainability Forum, a non-profit that supports the eight federal regional fishery management councils around the country. Patrick got his start in fisheries as an undergraduate intern with NOAA Fisheries Protected Resources Division in Sacramento, and in his first field job as a crew member of the California Department of Fish & Wildlife’s Wild and Heritage Trout Program.