Tidewater is a community near the head of the tide on the Alsea River. The Alsea River originates in creeks flowing from the west side of Mary's Peak, the highest mountain in the Oregon Coast Range.
The river flows west-northwesterly in a winding course through the Siuslaw National Forest. The main stem of the river begins at the confluence of the North and South forks near the community of Alsea and from there flows approximately 43 miles (69 km) to the coast at Waldport. The total watershed area is about 470 square miles (1217 sq km).
The Alsea River takes its name from the Native “Alsi” or “Alseya”, the people who lived around the extensive estuary. The river has historically supported major fisheries, with three important runs of anadromous salmonids: sea-run cutthroat trout (late summer and early fall), Chinook salmon (late summer through November), and steelhead trout (December to March). Since the decline in timber cutting in the 1990s, sports fishing provides modest support for businesses along the river. Read more here and here. Download the latest version and open the CoastView app to explore more of Tidewater and the Alsea River here: