Annabella Reservoir is located in Sevier County, Utah and is part of the Monroe Mountain Range. From Richfield or more specifically the town of Annabella follow Sauls Mountain Road which turns into Monroe Mountain road about 18 miles. After the first 14 miles you should pass Big lake, you can just keep heading east. Once you pass Duck Lake you're very close. If you keep going past Annabella Reservoir you can also get to Deep Lake.
Updated for the 2021 fishing season. Limit of 8 trout from Aug. 15–Dec. 31.
Annabella Reservoir gets its name from the nearby city of Annabella, Utah. The city was named from a combination of early settlers children Ann S. Roberts and Isabella Dalton.
The DWR has a good write up on the Monroe Mountain Lakes.
Water empties from the reservoir into Cotton Wood Creek. This water then flows to the Sevier River which goes into Rocky Ford Reservoir.
Nearby Areas to Fish
Cottonwood Creek below contains cutthroat Trout. Deep Lake, Duck Lake, Big Lake, Washburn Reservoir, Magelby Reservoir, Hunts Lake, Manning Meadows Reservoir, Barney Lake, Upper Box Creek Reservoir, Lower Box Creek Reservoir.