An examination of concrete hydrological infrastructure through the grammar of observational film

Filmed across the canalised Nihonbashi River in Tokyo, the Ljubljanica Sluice Gate in Ljubljana, the stepped Cotter Dam spillway in the ACT, and a concrete-lined stormwater channel at Flemington Road in Canberra, Motion in Division examines how concrete is used to shape the pacing and patterning of flow, rendering hydrological timing as an organised infrastructural condition, concurrently organising space and timing.

The opening and closing sections, filmed at Nihonbashi and Flemington Road, focus on repetition and variation. The camera returns to relations between water, concrete, and sound, and each moment carries a different inflection. Light shifts, water levels change, leaves move, and sound thickens or thins. These small differences draw attention to how concrete channels and structures shape the movement of water and the experience of time. At Nihonbashi, pylons, retaining walls, and overhead structures compress the river into restless, reflective surfaces. At Flemington Road, a narrow concrete trench directs stormwater through a quieter suburban setting where flow, birdsong, and traffic form a slow-moving pattern.

At the Ljubljanica Sluice Gate, the work turns to suspended force. The sequence begins with the sound of rushing water before the image appears, so the site is first encountered as pressure. When the image arrives, swirling water, eddies, and slower currents reveal a system that holds and regulates movement, producing a tension between visible agitation and delayed release, where force is held in suspension and accumulated before discharge. At Cotter Dam, the focus shifts to impact. The stepped spillway breaks a descent into repeated cascades, distributing force across a sequence of drops that process pressure through a recursive system of interruption and delay.