BEFORE: The old non-functioning denil-type fish ladder at Edwards Diversion Dam on Antelope Creek on the valley floor. Only 33 spring-run Chinook returned to Antelope Creek, on average between 1992-2007, with none returning in 1994, 1997, and 2009 and as many as 154 in 1998. © Tricia Bratcher, California Department of Fish and Wildlife