Rush Creek is the largest watershed in Mono County and one of the most celebrated trout fisheries in California's Eastern Sierra. This 27.2-mile creek rises high on Mount Lyell at over 13,000 feet elevation, with upper branches flowing from Marie Lakes and Davis Lakes on Mount Davis. The creek descends through the scenic June Lake Loop, flowing through June Lake, Gull Lake, Silver Lake, and Grant Lake before eventually entering Mono Lake. Often called the "Switzerland of the Sierra," this area combines stunning alpine scenery with exceptional fishing opportunities. Rush Creek encompasses two distinct personalities: the upper sections above Grant Lake offering roadside-accessible tailwater fishing with maintained flows, and the lower restored section below Grant Lake that represents one of California's most significant stream restoration success stories. The creek provides an average of 59,200 acre-feet of runoff annually and is joined by Reversed Creek near Silver Lake, along with Parker and Walker Creeks before reaching Mono Lake.