were removed, fish screens were installed and a new fish ladder was also installed. In addition, a minimum streamflow rate of is maintained from October 1 to June 30. "The spring run in Butte Creek is doing exceptionally well. "For the fish, it's a success story...", according to the California Department of Fish and Game's Harry Morse. Other restoration work has been the removal of invasive plant species including star thistle, scotch broom and Himalayan blackberry. Non-native plants can displace the native species, which may decrease biodiversity and cause a loss of habitat that provide nest sites and food sources. The riparian or streamside plant areas along Butte Creek are the most vulnerable to invasive non-native plants. See also List of California Department of Fish and Game protected areas Floods in the United States during the 1980s Notes References California Department of Fish and Game-Ecological Reserves. Butte Creek Watershed Conservancy CDFW Butte Creek Canyon Ecological Reserve Butte Creek Ecological Preserve External links US Fish and Wildlife Service's Anadromous Fish Restoration Program website. Nature reserves in California California State Reserves California Department of Fish and Wildlife areas Protected areas of Butte County, California California State University, Chico Sacramento River