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Henry Hagg Lake is a reservoir located in the foothills of the eastern slope of the Coast Range Mountains of northwestern Oregon. The lake is used for recreation in the summer and flood control in the winter.
Henry Hagg Lake is a reservoir located in the foothills of the eastern slope of the Coast Range Mountains of northwestern Oregon. The lake was formed by Scoggins Dam, an earthfill structure that impounds Scoggins Creek, a tributary of the Tualatin River. Hagg Lake was filled and began normal operation in 1975. At a maximum water elevation of 93.2 meters (305.8 feet) above sea level, the lake's total storage capacity is 64,812 acre-feet, with a maximum surface area of 1.8 square miles. The normal full pool water elevation is 92.5 meters (303.5 feet), with a capacity of 62,216 acre-feet, and a surface area of 1.7 square miles. The dam was built and is owned by the Bureau of Reclamation, which contracts with the Tualatin Valley Irrigation District for operation and maintenance. More information about the Scoggins Dam project is available from the Bureau of Reclamation.
The objectives of this study were to develop a model of Hagg Lake that:
Below are publications associated with this project.