"2.5 Tides and Currents"(PDF). North Central Puget Sound Geographic Response Plan. Washington Department of Ecology. December 2012. pp. 2–4. Archived from the original(PDF) on October 17, 2015. Retrieved March 23, 2016.
"2.5 Tides and Currents"(PDF). North Central Puget Sound Geographic Response Plan. Washington Department of Ecology. December 2012. pp. 2–4. Archived from the original(PDF) on October 17, 2015. Retrieved March 23, 2016.