Sustainable City Year Reports 2019-20 (Silverton)

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Design Report: Stormwater Improvements
(University of Oregon, 2020) Reyes, Gary; Roehrig, Gunter; Ellston, Jacob; Thomass, Eric; Salazar, Abraham; Kristof, Evan
The City of Silverton is a small rural community in Marion County approximately 12 miles northeast of Salem. The City is named after Silver Creek, which runs through town and is the primary feature of the project site radiating from YMCA’s Silverton Community Swimming Pool. The City utilizes indigenous water supply to serve community needs, with two intakes in Abiqua Creek and as well as an intake at Silver Creek adjacent to the YMCA Pool. Downtime at this intake must be minimized so as to not compromise the City’s water supply if the other intake goes down or if it is needed to fill excess demand. Silver Creek is also critical habitat for steelhead, a native migratory fish, so water quality control must be addressed and National Marine Fisheries guidelines must be considered. The main purpose of intake improvement is to increase pipe capacity 150% from two cubic feet per second (cfs) to five cfs. As the initial leg of pipe from the intake goes under the YMCA Pool parking lot, the City is taking the opportunity to update the pool parking lot up to code for pool use. The scope of the 2020.SILV.01 team’s work includes the expansion of this parking lot.