Hagg+Lake+&+Scoggins+Valley

Henry Hagg Lake was created through the earthfill construction of the Scoggins Valley Dam in 1975 by the U.S. Bureau of Reclamation:

"The bureau had to relocate 17 households and a church. Scoggins Valley Park opened in 1978. The dam was built primarily to provide water for irrigation. Water from the dam also is used for flood control, as a source of potable water to dilute treated wastewater discharged by the Unified Sewerage Agency (today: Clean Water Services) into the Tualatin River." (1)

It was named in honor of an Oregon Dairy farmer.(2) Photographs of before and after the dam construction can be found on Washington County Heritage Online: Hagg Lake and Scoggins Valley.