Lake Ada Rose is a reservoir located just 2.2 miles from Willits, in Mendocino County, in the state of California, United States. Whether you’re fly fishing, spinning or baitcasting your chances of getting a bite here are good. So grab your favorite fly fishing rod and reel, and head out to Lake Ada Rose. For Fishing License purchase, fishing rules, and fishing regulations please visit California Fish & Wildlife. (Website) Please remember to check with the local Fish and Wildlife department to ensure the stream is open to the public. Now get out there and fish! Check out our Fishing Times chart to determine when the fish will be most active.