Fish Passage Priorities - CDFW - 2012 [ds812]
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Man-made barriers to salmonid migration include road /stream crossings, irrigation diversions and dams. Road /stream crossings are extremely numerous and often cross...
鲑鱼(salmonid)洄游的人工障碍包括道路-溪流交叉构筑物、灌溉引水设施及水坝。这类道路-溪流交叉构筑物数量极多,且常横跨……
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State of California


