Lac Pelletier sits in a glacial spillway in the Swift Current Creekdrainage basin. In 1937, a low dam was built at the lake's northern end that raised the water level by about 60 centimetres (24 in). The dam was rebuilt in 1956. When the water levels reach a wooden culvert at the dam, water is released into Pelletier Creek which flows through the valley until it meets the Swift Current Creek north-east and down stream from Reid Lake. The dam was operated by the Prairie Farm Rehabilitation Administration from 1938 until the 1970s, at which point Lac Pelletier Regional Park took control.[3][4]
On the eastern shore of the lake is the community of Darlings Beach. Lac Pelletier Regional Park and the associated golf course are on the eastern and southern shores. There are over 300 cottages around the lake. Camp Lemieux is on the western shore[5] and Camp Elim is on the northern shore.[6]
There are four campgrounds with 224 campsites, electric hookups, and modern washrooms / showers. The park also has two beaches, boat launches, playgrounds, mini golf, and two pickleball courts.[9][10]
Lac Pelletier Regional Park Golf Club, built in 1965, is a 9-hole, grass greens course. It has a licensed clubhouse, rentals, and is a par 35 with 3,058 total yards.[11]