Blue-lit screens rise and tilt across the floor of UC Berkeley’s Worth Ryder Art Gallery. At their center, a digital river winds through an imagined watershed. Stools surround them, each representing a different water regime, or system for governing and allocating water — from Indigenous stewardship to colonial extraction and AI-driven optimization. Sit on a stool marked “Kinship,” and the dams and large-scale irrigation infrastructure disappear. Sit on the “Water Projects” stool, where the state diverts as much water as it can, and the river shrinks as dams rise. Two stools offer competing visions of AI — one that maximizes economic output and another that prioritizes long-term ecological survival. When two or more people sit stools at the same time, the regimes interact. In some combinations, the system may prosper for a time; in others, it may reach “day zero,” when drought or depleted groundwater leave the watershed unable to meet competing demands.