Henningson Reservoir is located in Sanpete County, Utah and is part of the Manti-La Sal National Forest. The region of Henningson Reservoir known as Mayfield Canyon can be accesed from Skyline Drive. From the city of Mayfield take 12 mile canyon to 12 mile flats then continue to Skyline Drive and head south. From the turn off to Skyline Drive then turning onto Forest Road 0169 the lake is about 7.7 miles. You can also take the longer route via Forest Road 044 and Forest Road 0169 which passes by Julius Flat Reservoir. Although this route is about 2 miles longer. The lake is located in the Muddy Creek Drainage.
According to DWR fish stocking report, Henningson Reservoir hasn’t been stocked with fish going back to 2002. This water is rated a 6 on the Utah sport fish classification. This is the worst rating a water can receive. Classification are based on ratings of esthetics, availability, and productivity. Class 1-3 waters are considered important sport fishing waters. Nearby Blue Lake is rated as a 3, and Island Lake is also rated as a 6.
A tributary to the lake Reservoir Creek, has a small population of brook trout.
Name origin comes from Chris Henningson who owned a mill on the site. Mr Henningson built the dam to assist with his mill. The lake is also known as Rochester. Now the lake is owned by the Muddy Creek Irrigation company.
There is a maximum surface area of 32 acres. The lake has a maximum depth of 46 feet.