Southern California is home to a surprising number of steelhead streams, most of which are imperiled in one form or another. California Trout’s Southern California Region Manager Nica Knite is fighting to keep many of these heavily pressured populations alive, which often means balancing agricultural and residential uses of water from coastal streams.
In the case of Santa Clara River (which is blocked by the Freeman Diversion), she wrote a powerful editorial for the Ventura County Star about the challenges facing both agriculture and residential water users in Ventura County—which is once again overdrawing the water from its aquifer (from the Ventura County Star)
While the Freeman Diversion has been a key component in preserving the farming legacy on the Oxnard Plain up until now, other historic uses of the Santa Clara River, such as preserving the Southern California steelhead fishery, have been damaged or lost. Agriculture as well as other uses dependent upon water are facing serious threats in the near future.
We should be taking a lesson from neighboring Los Angeles and its use of eastern Sierra snow melt to support the unchecked demand of the city’s 20th century building and development boom. When the water managers initially devised plans to import water from Owens Lake, they never imagined that the demand would exceed the seemingly endless and annually replenished supply found in the lake.
In time, though, it did exceed the available resource, but failed to learn the lesson — Owens Lake was depleted and destroyed and Los Angeles started draining Mono Lake. In the 1980s, lawsuits filed by California Trout stopped the madness, requiring the replenishing of Mono Lake and leading to Los Angeles’ internationally recognized water conservation programs.
Ventura County is dominated more by farms than urban or suburban sprawl, but the formula and the result are the same. The water resources are finite and species, habitat and groundwater resources will be lost forever if we do not stop using more water than is available and can be maintained in the natural systems.
You can read the entire editorial here.
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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.