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Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.

GENERAL INFORMATION: 503-823-7404

1120 SW Fifth Ave, Suite 600, Portland, OR 97204

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Seasonal Water Supply Planning

Each year, the Portland Water Bureau develops a Seasonal Water Supply Augmentation and Contingency Plan. This plan evaluates the availability of water from the Bull Run and groundwater sources, projected weather forecasts, and water demands to guide management of the drinking water system. Between careful management and the region’s strong conservation efforts, PWB is prepared to meet the range of potential supply and demand conditions that could occur in the Portland water system this summer.

August 25, 2015 Update: There are 3.1 billion gallons, or about 31% of usable storage in the Bull Run Reservoirs. This is below the historic average, but still above historic lows for this time of year. Based on demand and supply projections, on July 16th the Portland Water Bureau began utilizing groundwater to augment 25% of the total daily water demand. On July 30th, groundwater use was increased to approximately 40% of total daily demand based on future supply and demand conditions along with long range weather forecasts. This will likely continue until the Bull Run receives significant precipitation. Fortunately, Portland’s drinking water source, the Bull Run supply, in combination with groundwater from the Columbia South Shore Well Field, is capable of meeting Portland’s water needs throughout the summer.

Usable Storage - Portland's Bull Run Reservoirs have 16.8 billion gallons of total storage; of that, 9.9 billion gallons are considered usable for drinking water.

Average Daily Storage - The average amount of usable drinking water storage on a daily basis using historical data from 1976-2014

Lowest Daily Storage - The lowest daily level of usable drinking water storage from 1976-2014. 


Summer Supply Plan Update

August 4, 2015

Water Efficiency Information

Information about ways to use water wisely.