Avenging Waters (1936)

"Avenging Waters" is a 1936 Western movie directed by Nate Gatzert and starring by Ken Maynard, Beth Marion. Mortimer builds a fence for the cattle brought by Ken Morley. To retaliate, Slater who wants access to the land, builds a dam cutting off Mortimer's water supply. When Ken confronts Slater, he is captured. Then lightning destroys the dam and Ken, imprisoned in a shack, is in the path of the oncoming water.