The River broke the mold in 2005 and embraced the disenfranchised adult rock listener who had grown weary of the traditional classic rock format. No other station in Casper delivers the true variety of music that listeners crave, spanning over five decades of hits. New Rock. Classic Rock. 80s & 90s. With local personalities and powerful, music-driven radio that breeds passionate listeners, 107.9 The River is truly one of a kind.