GENERAL INFORMATION: 503-823-7404
MAILING ADDRESS: 1120 SW Fifth Ave, Suite 600, Portland, OR 97204
Northwest climate will continue to experience annual and seasonal variability, even as the long-term climate shifts (Click image for National Climate Assessment).
Climate models project a warmer future Northwest with drier summers, wetter winters and heavier rainfall during storm events (Click image for Climate Change in the Northwest report).
Portland’s water system is expected to continue meeting customer needs into the future, based on 30-year population and demand projections.
The Bull Run reservoirs draw down during the summer. Fall and spring rains are important for reservoir refill (Click image for Summer Supply Planning information).
The city's backup groundwater supply increases the water system’s resilience to climate change (Click image for groundwater information).
Portland’s primary drinking water supply in the Bull Run Watershed depends mostly on rain rather than snow, making it more resilient to warming temperatures.
Total water use decreased an average 1% per year while population grew an average 2% per year since 2003 (Click for demand and consumption history).
Snow keeps stream temperatures cold for salmon. Warmer temperatures could lead to less snow in the Bull Run Watershed in the future.