|Part of||Crowley Lake Watershed|
|- left||Mount Mills drainage|
|- right||Bear Creek Spire drainage|
|Location||along Sierra Crest|
|- elevation||11,667 ft (3,556 m) |
Mills Lake is a California waterbody along the Sierra Crest east of Ruby Peak and Mount Mills near Little Lakes Valley. The discharge of Mills Lake flows through Ruby Lake, Rock Creek Lake, and into Rock Creek.