Approximately 81 percent of the annual runoff of Mill Creek in the Mono Basin has been attributed to snowmelt, occurring from April through September, and the remaining 19 percent of the annual streamflow occurs as base flow from October through March.

In 1911, the Lundy Project was completed and the dam raised the natural outlet of Lundy Lake 37 feet to an elevation of 7,803 feet so that hydroelectric power could be generated by the Southern Sierra Power Company.

[6] It is controversial whether North American beaver (Castor canadensis) were native to Mill Creek and the Mono Basin.

[citation needed] Beaver were introduced, or re-introduced, along Mill Creek in the Mono Basin by the California Department of Fish and Game in the 1950s.

Trails circle toward Saddlebag lake and to the foot of North Peak and Mount Conness on the Yosemite National Park boundary.