Avant-garde documentarian Bill Morrison ("Decasia: The State of Decay") trains his eye on the Mississippi River Flood of 1927, using vintage images and minimal text to illuminate the circumstances that inundated 27,000 square miles of land and forced the exodus of one million displaced sharecroppers. Bill Frisell's gritty blues score provides a memorable complement. 80 min. Standard; Soundtrack: Silent with music score.