31. Below the diversion dam , the bed of the Salt River is dry, except following rain or upstream runoff. 32. Flows at the Barrier Dam are controlled by releases at the Oroville Dam Spillway and Thermalito Diversion Dam . 33. The project is an extensive complex of multiple retention dams, diversion dams , reservoirs, canals, tunnels and hydroelectric powerplants. 34. It descends in altitude from the diversion dam to a place about 103m directly above this hydroelectric facility. 35. A diversion dam creates the reservoir. 36. There are many smaller dams, check dams, or diversion dams , that lace the length of the Colorado River. 37. The city was established in 1906 as the terminus of the Milner diversion dam on the Snake River. 38. The pool is closed during flash flood warnings as Barton Creek may flood and overflow the diversion dam . 39. The Black Canyon diversion dam on the Payette River, built in the early 1920s, is east of the city. 40. Additional River hazards are three diversion dams that exist between Naturita and the Hwy 145 bridge East of Norwood.