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Portland Water Bureau

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


MAILING ADDRESS: 1120 SW Fifth Ave, Suite 600, Portland, OR 97204

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Historic Climate and Precipitation

Winters in the Bull Run are cool and wet while summers are warm and dry. Precipitation in the watershed most often occurs as rainfall, although elevations above 2,000 feet receive snow every winter. Rainfall occurs most often as low- to moderate-intensity storms. Overall, the Bull Run receives approximately 135 inches of precipitation annually.