Location: Central Washington, near Yakima Length: 9.2 miles (with shorter options) Cacti blooms at in spring. Photo by Natasha'n'Boris. Head towards Yakima for some of the best wildflower shows in the state. Spend the day roaming on this former ranch, which in spring is cloaked in wildflowers! See full list on yakimawa.gov Facts & Demographics About the Tri-Cities. The Tri-Cities metropolitan area consists of three neighboring cities: Kennewick, Pasco and Richland. A fourth neighboring city, West Richland, is generally included as part of this metropolitan area. The population of the Tri-Cities metropolitan area was 253,540 based on the 2010 Census, making it the ... Mar 16, 2017 · This river is the main source of irrigation, transport in China. The largest hydroelectric power station in the world was built on this river. In 1911, it killed around 1,00,000 people and cause severe property loss.