The Mount Tabor Park Calendar is a 7-year personal project of photographer Andrew Haliburton celebrating Portland’s beloved park and open water reservoirs. For over 100 years, the reservoirs functioned at the heart of the City’s drinking water supply, balancing the flow and pressure in a network of pipes delivering pure drinking water from Bull Run to Portland. This ingeniously-engineered system was powered by a renewable resource – gravity, and was operational by 1910. With replacement reservoirs at Kelly Butte and Powell Butte nearing completion, the Tabor open water reservoirs face an uncertain future.