Necanicum River -
The Necanicum River is river on the Pacific coast of northwest Oregon in the United States, approximately 21 miles (34 km) long. It drains a timber-producing area of the Northern Oregon Coast Range northwest of Portland. It forms the first estuary south of the mouth of the Columbia River along the Oregon Coast, reaching the Pacific Ocean at Seaside in Clatsop County.
Necanicum is one of several Indian names in northwest Oregon beginning with ne, meaning place. Necanicum is derived from Ne-hay-ne-hum, the name of an Indian village once on the stream. William Clark named it Clatsop River on January 7, 1806, but the name did not stick. The river was also once known as Latty Creek, for William Latty, an early pioneer in the southern part of Seaside.
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