ABSTRACT The Kaiti Samo Irrigation Area is located in Kaiti Village to Batang Samo Village in Rokan Hulu Regency Riau Province's. Kaiti Samo irrigation consists of several connections between weirs, including the Kaiti weir, the Pegadis weir, and the Samo weir. The three weirs are watersheds that are close to each other but are not one stream. If the irrigation water supply cannot be separated…