The Salt River runs westward through the city of Phoenix. The riverbed is often dry or just a trickle due to large irrigation usage. The river is full after infrequent rainstorms or when more water is released from upstream dams. The city of Tempe has built two inflatable dams in the Salt River bed to create a year-round recreational lake, called Tempe Town Lake. The dams are deflated to allow the river to flow unimpeded during releases. Lake Pleasant Regional Park is in Northwest Phoenix in the suburb of Peoria, Arizona.