Watergraph (2003) used a fountain pump to re-circulate water down drywall, waterproofed with pool paint. Tiny holes in a PVC pipe formed narrow trickles of water which clung to the wall's face and created shifting rivulets. These sought a path of least resistance along the minor topographies of the wall. The rivulets were strikingly three-dimensional when dramatically lit from the side. A hidden gutter at the floor caught and recirculated the water.