Graph Paper Rolls

Shelf after shelf of rolled chart paper fills a wooden archive unit inside West Ryde Pumping Station, the rolls dust-covered but their printed grids still visible. Each is labelled by reservoir or valve point, among them Killara, Warringah, Beacon Hill, Bantry Bay, Belrose and Dundas. The charts logged water levels, valve positions, and suction and feed rates across the northern distribution network. They were photographed in 2015, filed and labelled where they had been put. Australian Water Technologies left the site in June 2001. The rolls stayed. Graph paper of this kind was the working material of engineers and draughtsmen, built for logging data, plotting curves, and recording the measurements that kept a large water supply operation running. That context matters here. West Ryde Pumping Station was no ordinary facility. When full electrification was completed in 1982, it became the largest domestic water pumping station in Australia, with 13 pumping units plus one standby. The rolls in the frame belong to a place that accumulated national engineering firsts across three decades: steam turbines in a pumping station (1906), reinforced concrete chimneys in industrial use (1918), electrically welded steam piping (1921), pneumatic ash collection (1923). Station No. 2, the Federation Freestyle complex that houses these spaces, was completed and commissioned on 15 September 1921. It replaced Station No. 1, which had exhausted its capacity by 1916, and at completion it was the largest steam-powered water pumping station in Australia. The boiler house, engine house, administration block, and economiser house were built together as an integrated working plant. The graph paper rolls were part of the administrative layer that ran alongside all of that machinery. What the photograph records is not abandonment in the usual sense. West Ryde Pumping Station has never stopped pumping. Station No. 2 has run continuously since 1921. The offices emptied; the pumps kept going. The charts remained exactly where they had been filed, grids intact, labelled for readings that were no longer being taken.