About the Necanicum Watershed Council

The Necanicum Watershed covers 54,400 acres and includes the Necanicum, Neawanna & Neacoxie systems, for a total of 86 stream miles and services a population less than 10,000. Within a short 21 miles, the Necanicum River and its tributaries run from a height of more than 2,800 feet in the Oregon Coast Range down to the Pacific Ocean. The river is a major feature of both the city of Seaside and its outlying areas. Running along Highway 26 and through the center of town, the river’s swells during high tides and heavy rainfall are highly visible. The short, steep landscape of the upland region of the watershed allows for very little space to absorb the water critical to the survival of the resources of the region. Fortunately, the Necanicum’s watershed holds many flood plains and wetlands to help capture, filter and absorb this vital resource.

The upper watershed is dominated by coniferous forests of Sitka spruce, Douglas fir and western hemlock, which help to capture and hold rainwater, keeping the landscape moist year round. Excess water runs off into the river and its tributaries.

Land use in the watershed is:

  • 92 % forest

  • 4% rural residential

  • 3 % urban

  • 1 % non-range agricultural

  • 0 % range

The Necanicum Watershed Provides:

  • Municipal water for the City of Seaside

  • Breeding, rearing, and spawning grounds for coastal coho, chinook and chum salmon, as well as steelhead and sea-run cutthroat trout, and Brook and Pacific lamprey

  • Natural refuge for wildlife, including Roosevelt elk, black-tailed deer, beavers, river otters, red-legged frogs, and a wide range of birds, from year-round residents like great blue herons to migrating barn and tree swallows and bald eagles

  • Land for agriculture

  • Forestry lands

  • Floodplain protection for the region


Click here to see a copy of our most current by-laws: Necanicum Bylaws, updated Nov 2014

Click here to read our 2020 Annual Report