Spillway at Dam 1, Bull Run Watershed

Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area. The spillway gates visible in this photo, added to the dam in 1955, increased the reservoir capacity from the original 8.8 billion gallons to 10 billion gallons.

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Filename: Spillway Dam 1 Bull Run.jpg
Copyright: © 2011 Andrew Haliburton, All Rights Reserved
Image Size: 5100x3394 / 13.4MB; Bull Run Bull Run Dam Bull Run Watershed Concrete Cryptosporidium Curved Drinking Water Forest Gravity Dam Habitat Lake Mount Hood Mount Tabor Reservoir Mt Hood Mt Tabor Reservoir Natural Filter Open Reservoir Oregon Portland Portland Water Bureau Protected Public Pure Purity Quality Rain Reservoir Secluded Spillway Spillway Gates Water Water Quality Water Resources Resource Protection Images Photos Really Right Stuff RRS BD700-L RRS BH-55 PCL RRS TVC-33
Contained in galleries: Bull Run Watershed

Dam 1, a curved concrete gravity dam, constructed 1925-1929, in the 102-square-mile Bull Run watershed near Mount Hood, has a maximum reservoir capacity of 10 billion gallons, making it the primary contributor to the Portland Water System Distribution Area. The spillway gates visible in this photo, added to the dam in 1955, increased the reservoir capacity from the original 8.8 billion gallons to 10 billion gallons.