The NOAQ Boxwall is a mobile freestanding flood barrier, intended for temporary use to protect buildings and other objects from flood water. It consists of elements "boxes" that are snapped together to form a protective chain - a box wall. It is self-anchored, as it is automatically stabilized by the weight of the flood water itself. A boxwall can also be used to redirect fast flowing water in a flash flood situation. A third application is making a temporary basin - a "boxpool".