of Council Bluffs to move their own riverfront development time line forward. In the summers of 2008, 2012, 2016, and 2021 the United States Olympic Team swimming trials were held in Omaha, at the Qwest/Century Link Center. These events were highlights in the city's sports community, as well as a showcase for redevelopment in the downtown area. Geography According to the United States Census Bureau, the city has a total area of , of which is land and is water. Situated in the Midwestern United States on the bank of the Missouri River in eastern Nebraska, much of Omaha is built in the Missouri River Valley. Other significant bodies of water in the Omaha-Council Bluffs metropolitan area include Lake Manawa, Papillion Creek, Carter Lake, Platte River and the Glenn Cunningham Lake. The city's land has been altered considerably with substantial land grading throughout Downtown Omaha and scattered across the city. East Omaha sits on a flood plain west of the Missouri River. The area is the location of Carter Lake, an oxbow lake. The lake was once the site of East Omaha Island and Florence Lake, which dried up in the 1920s. The Omaha-Council Bluffs metropolitan area consists of eight counties; five in Nebraska and three in Iowa. The metropolitan area now includes Harrison, Pottawattamie, and Mills Counties in Iowa and Washington, Douglas, Sarpy, Cass, and Saunders Counties in Nebraska. This area was formerly referred to only as the Omaha Metropolitan Statistical Area and consisted of only five counties: Pottawattamie in Iowa, and Washington, Douglas, Cass, and Sarpy in Nebraska. The Omaha-Council Bluffs combined statistical area comprises the Omaha-Council Bluffs metropolitan statistical area and the Fremont Micropolitan statistical area; the CSA has a population of 858,720 (2005 Census Bureau estimate). Omaha ranks as the 42nd-largest city in the United States, and is the core city of its 60th-largest metropolitan area. There are no consolidated city-counties in the area; the City of Omaha studied the possibility extensively through 2003 and concluded, "The City of Omaha and Douglas County should merge into a municipal county, work to commence immediately, and that functional consolidations begin immediately in as many departments as possible, including but not limited to parks, fleet management, facilities management, local planning, purchasing and personnel." Geographically, Omaha is considered as being in the "Heartland" of the United States. Important environmental impacts on the natural habitat in the area include the spread