Quail Creek reservoir was completed in 1985 to provide irrigation and culinary water to the St. George area. Most of the water in the reservoir does not come from Quail Creek, but is diverted from the Virgin River and transported through a buried pipeline. The name came from the considerable population of quail that lived along its upper drainage in the 19th and early 20th century. They did not survive one particularly hard winter. The name of Anthony Quayle who is sometimes supposed to be its namesake is a different spelling and does not have an historical connection to this particular drainage. Two dams form the reservoir. The main dam is an earthfill embankment dam. The south dam is a roller-compacted concrete dam, constructed to replace the original earthfill dam that failed in the early hours of New Year's Day 1989. The name Quail Creek has been misplaced on current area maps. The true location was described in the Quail Creek Decree, a judgment declared by the Fifth Judicial District Court of Washington County, Utah, on March 5, 1923, which assigns water from Quail Creek to the areas along its stream. The Decree defines Quail Creek as "a natural stream of water which with all its tributaries lies within Washington County, State of Utah;...said stream rises in the Pine Valley Mountains and flows in a southeasterly direction to a junction with the Virgin River in said county." The Decree describes Quail Creek as "a fluctuating stream" and states that "all of the waters thereof are of such quality that they may be applied to beneficial uses for culinary, domestic and other purposes." The true Quail Creek is fed by numerous tributaries issuing from the southern face of Pine Valley Mountain, and provides agricultural and domestic water to area residents as described in the Quail Creek Decree. Current maps have erroneously applied the label "Leeds Creek," but the naming of the creek predates the availability of the name Leeds. The name Leeds Creek was given by 19th century settlers to the manmade ditch they created to bring water from Quail Creek to their farms and community. The canyon that is mistakenly labeled Quail Creek on recent maps is a small, dry canyon which has no tributaries. It is found in a completely different location, does not match the Decree's description, and represents a clerical error. Correct naming is crucial to the many historical facts and rights associated with this drainage. The Quail Creek Decree and its related documents may be viewed by searching the name and accessing it through the Utah Division of Water Rightsweb site.