1895 map of Portland's water supply system, showing the boundaries of the Bull Run Reserve. The Bull Run pipeline is indicated on the main map, as are reservoirs, tanks and a pumping station. The pipeline profile is charted in an inset, with elevation to illustrate the gravity-flow system that brings water from the Bull Run River to the city of Portland. The map also shows rivers, lakes, creeks, post offices and cities throughout Multnomah County and around Mount Hood.