Tempe Town Lake is an artificial perennial reservoir located just north of Tempe Butte at the confluence of the intermittent Salt River and the ephemeral Indian Bend Wash in Tempe, Arizona, United States. The reservoir receives much of its water from the Colorado River via the Central Arizona Project. On July 20, 2010, a portion of the west side of the dam that contained the water in the lake collapsed, sending a flood of water into the Salt River and draining the lake. History In March 1989, Tempe adopted the Rio Salado Master Plan which represented the culmination of more than 20 years of environmental land planning. Studies of water quality and usage, the Mill Avenue Bridges and ASU recreation ensued and programming began. A groundbreaking ceremony near Tempe Beach Park marked the beginning of construction of the river channelization. The Rio Salado Master Plan showed a Town Lake concept with a continuous body of water between the north and south shores. Previously, the lake concept included islands; this concept was modified to meet the flow capacity of the river channel. In 1995, the city added more staff to the team dedicated to the Rio Salado project and began construction of a mile long bike path along the south bank of the river. The path features public art at a number of spots along the way. The city began the Town Lake design report and completed another financial capacity study and landscape designs for portions of the parks. The next year, the consultant completed construction drawings for the Tempe Town Lake and the city designated of area including the lake as Rio Salado Park. On March 19, 1997, requests for bids were sent out for the lake construction. The city awarded contacts for construction of the lake on June 12, and groundbreaking ceremonies were held on August 8. Water from the Central Arizona Project (CAP) started flowing into Tempe Town Lake on June 2, 1999, and by July 14, the lake was declared full. On November 7, Tempe Town Lake was opened to the public. Tempe Beach Park Originally built in 1931, Tempe Beach Park was completely renovated in 1999 as part of the construction of Town Lake. The park connects to the of paths for bicycling, jogging or in-line skating that circle the lake. Activities The historic baseball field plays host to baseball and softball games, as well as