1962 report indicated that Coyote Creek, from its mouth to the headwaters in Henry Coe State Park, was an historical migration route for steelhead trout. SCVWD studies have shown that Standish Dam and percolation ponds have posed barriers to outmigrating trout. Based on these results, the seasonal Standish Dam barrier has not been installed since 2000. The on-channel percolation ponds constructed on Coyote Creek severely degrade steelhead habitat by harboring non-native fish predators, such as largemouth bass ("Micropterus salmoides") which prey on salmonid fingerlings, and also by releasing warm water flows. Moving Ogier Ponds and Metcalf Percolation Ponds off-channel would significantly enhance rearing habitat for steelhead.