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15 wrz 2014 · Federal Judge Oliver Wanger overturned a federal scientific study that aimed to protect Delta smelt in the Sacramento-San Joaquin Delta. In 2005, the U.S. Fish and Wildlife Service said that Delta export pumping operations would not jeopardize the continued existence of the fish.
Operations of the water project pumps are regulated to comply with endangered species law through “biological opinions” issued by federal regulatory agencies. In 2007, a federal court found that existing biological opinions written to protect Delta smelt and several runs of anadromous fish were inadequate.
7 wrz 2007 · U.S. District Court Judge Oliver Wanger ruled to restrict water deliveries from the California Delta’s massive export pumps to the Bay Area, Central Valley and Southern California to protect the fish.
20 lip 2017 · The delta smelt (Hypomesus transpacificus), a small semi-anadromous fish endemic to the SFE and considered an indicator species, is close to extinction in the wild.
Changes in the position of the low salinity zone, a habitat suitability index, turbidity, and water temperature modeled from four 100-year scenarios of climate change were evaluated for possible effects on delta smelt Hypomesus trans-pacificus, which is endemic to the Sacramento–San Joaquin.
17 lip 2016 · Delta Smelt, Hypomesus transpacificus, is a native fish that has been at the forefront of waterresource management concerns because of its decline in abundance (USFWS 2019). Delta Smelt are...
5 wrz 2007 · To protect the smelt, a species unique to the delta, a federal judge issued a far-reaching ruling Friday imposing limits on water diversion from the delta.
