Map of Portland's city water system, produced approximately 1972. There are two areas shaded on the map: the Bull Run Reserve and the city of Portland. The Bull Run service area boundary is also shown. Dams on the Bull Run River, the water system's headwaters, the conduits carrying water west to the city, and several reservoirs are indicated on the map. Visit City of Portland Archives for more https://efiles.portlandoregon.gov/record/16821.