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Title: Lake Washington Ship Canal Water Quality Monitoring and Analysis Plan
Authors: United States. Army. Corps of Engineers. Seattle District
Keywords: Water quality--Monitoring
Lake Washington Ship Canal (Wash.)
Publisher: United States. Army. Corps of Engineers. Seattle District.
Abstract: Lake Washington is a large freshwater lake within the Seattle metropolitan area that historically drained to Puget Sound via the Black River and the Duwamish River. In 1916, the US Army Corps of Engineers, Seattle District (CENWS) constructed the Lake Washington Ship Canal (LWSC) to provide for both deep and shallow navigation between Puget Sound and Lake Washington as well as a means for the passage of anadromous fish to upstream spawning grounds. The LWSC connects these water bodies via the Hiram Chittenden Locks and two canals: the Montlake Cut between Lake Washington and Lake Union, and the Fremont Cut between Salmon Bay and Lake Union. The Hiram Chittenden Locks, located at the entrance to Salmon Bay, separate Puget Sound (saltwater) from Lake Washington (freshwater). The locks consist of a double lock (small and large) and a fixed concrete gravity dam structure with six gated spillways, saltwater drain, guide walls, and a fish ladder. A result of operating the locks is a potential for saltwater intrusion into the LWSC, Lake Union, and Lake Washington, which can affect the freshwater environment. To assure that saltwater intrusion is kept to a minimum, the CENWS operates the locks to minimize saltwater entering the LWSC, and monitors salinity at various locations and depths through the LWSC. This monitoring and analysis plan provides details on the methods and protocols used to monitor salinity in the LWSC. This plan was developed in accordance with Guidelines for Preparing Quality Assurance Project Plans for Environmental Studies (Ecology 2001), and includes the following elements: 1. Project organization, 2. Project description, 3. Monitoring procedures, 4. Data quality objectives, 5. Data assessment procedures and corrective actions, 6. Data management procedures.
Description: Technical Report
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Technical Reports

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