|Location||Riverside County, California|
|Primary inflows||Temecula Creek, Kolb Creek, Wilson Creek|
|Basin countries||United States|
|Water volume||61,500,000 m³|
It was created in 1948 when the owners of the Vail Ranch constructed the 132-foot (40 m) high Vail Lake Dam, which has been owned and operated by the Rancho California Water District since 1978.
Vail Lake is supplied by storm water runoff from Kolb, Temecula, and Wilson Creeks. Surface water stored in the lake is used to help replenish local ground water supplies through recharge operations.
The property surrounding Vail Lake is privately owned, and recreational access to the lake is privately controlled. The Butterfield Country Recreation Park was established in 1968 to provide public access to the lake and its marina, but the park was closed by its owners in 1989. In 1995, a members-only resort facility was opened at the location of the former park; and in 2000, the area was re-opened to the public on an annual-fee basis. Recreational activities at Vail Lake include fishing, boating, RV and tent camping, horseback riding, mountain biking, miniature golf and swimming.
Land near Vail Lake is the only known native habitat of the endangered flowering shrub Ceanothus ophiochilus, which was named the Vail Lake ceanothus when it was discovered in 1989.
- Vail Lake Quadrangle California, Map. United States Geological Survey, 1953, Photorevised 1982, USGS Topographic Map, 7.5-Minute Series (Topographic), scale 1:24,000.
- Reservoir Information, California Department of Water Resources, Division of Flood Management, 2007-01-25, retrieved 2007-02-20
- O'Leary, Tim (2006-01-08), "Water pressures: District strategizes to meet demand, save", The Riverside Press Enterprise, retrieved 2007-02-20
- Gerstbacher, Emily. "Temecula History: A Chronology 1797-1993". oldtemecula.com. Retrieved 2007-02-20.
- "Water Quality". Rancho California Water District. Retrieved 2007-02-20.
- ""Vail Lake: Southern California's Boating and Fishing Secret"", SCMA Headings, Southern California Marine Association, July 2002, retrieved 2007-02-20