Ice Harbor Spillway dissolved gas field studies : before and after spillway deflectors
Schneider, Michael L. (Michael Lee); Wilhelms, Steven C.
Abstract: Based on the results of the Dissolved Gas Abatement Studies, spillway deflectors were adopted for Ice Harbor as a measure to reduce the total dissolved gas (TDG) production during spill operations. Three field studies were conducted at the Ice Harbor Spillway on the lower Snake River to characterize the effects of spill operations on TDG in the Snake River. The first two studies examined TDG production for the original spillway design. The third study characterized TDG production with flow deflectors installed on the spillway face. TDG was significantly reduced for nearly all spill operations with deflectors in place. TDG near the stilling basin was reduced from approximately 150% to approximately 124%. TDG at end of the navigation guide wall was reduced from 135% to 114% for similar operating conditions.
At head of title: "Dissolved Gas Abatement Studies."
United States. Army. Corps of Engineers. Walla Walla District.Engineer Research and Development Center (U.S.)Coastal and Hydraulics Laboratory (U.S.)
Spillways; Stilling basins; Hydraulic structures; Water--Dissolved oxygen; Nitrogen supersaturation; Water--Air entrainment; Tailwater ecology; Columbia River; Snake River (Wyo.-Wash.)
ERDC/CHL ; SR-16-3