Abstract: A floor water barrier device confines water to a desired area within a structure such as a garage. The device includes a barrier having a bottom section having a bottom surface. The barrier has an upper section positioned in spaced relationship to the bottom section. The upper section is substantially coextensive with a length of the lower section. The barrier further has a medial section coupled to and extending between the bottom section and the lower section defining a channel extending along the barrier. The channel is configured to prevent fluid from passing completely over the bottom section. A coupler is coupled to the bottom surface of the bottom section and extends along a length of the bottom section such that the coupler prevents fluid from passing between the barrier and the upper surface of the floor.