Necanicum River

Coordinates: 46°0′41″N 123°55′39″W / 46.01139°N 123.9275°W / 46.01139; -123.9275

Necanicum River
The river as it flows through Seaside near its outlet to the Pacific Ocean
Country	United States
State	Oregon
County	Clatsop
Source	Northern Oregon Coast Range
- location	Humbug Mountain, Clatsop County, Oregon
- elevation	1,580 ft (482 m) [1]
- coordinates	45°55′37″N 123°42′30″W / 45.92694°N 123.70833°W / 45.92694; -123.70833 [2]
Mouth	Pacific Ocean
- location	At Seaside, Clatsop County, Oregon
- elevation	0 ft (0 m) [2]
- coordinates	46°0′41″N 123°55′39″W / 46.01139°N 123.9275°W / 46.01139; -123.9275 [2]
Length	21 mi (34 km) [3]
Basin	83.7 sq mi (217 km2) [4]
Location of the mouth of the Necanicum River in Oregon

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.

Course

The Necanicum River rises south of Humbug Mountain (not to be confused with the Humbug Mountain in southwestern Oregon), in south central Clatsop County and south of the Saddle Mountain State Natural Area. The elevation of the river's source is approximately 1,580 feet (480 m).^[2] It flows generally west, along U.S. Route 26. Approximately 3 miles (4.8 km) from the coast, east of Tillamook Head, it turns north. The river enters the Pacific Ocean at Seaside. Its final approach to the ocean is nearly parallel to the coast, bisecting the city of Seaside south to north.

Neacoxie Creek flowing in from the north, draining Clatsop Plains, is the last tributary before the river enters the ocean.

At one time, Cullaby Lake and Cullaby Creek drained into the river via the Neacoxie. The Clatsop Canal Project – Carnahan Ditch changed this and they now train into the Skipanon River.

See also

• List of rivers of Oregon

References

1. ^ Source elevation derived from USGS topo map. The USGS GNIS source coordinates appear inaccurate.
2. ^ ^{a b c d} U.S. Geological Survey Geographic Names Information System: Necanicum River
3. ^ "The Watershed". Necanicum Watershed Council. http://www.necanicumwatershed.org/watershed.html. Retrieved May 12, 2009. 
4. ^ Snyder, Kai U.; Timothy J. Sullivan, Richard B. Raymond, Erin Gilbert, Deian Moore (March, 2002). "Necanicum River Watershed Assessment". E & S Environmental Chemistry, Inc. and Necanicum River Watershed Council. https://nrimp.dfw.state.or.us/web%20stores/data%20libraries/files/Watershed%20Councils/Watershed%20Councils_182_DOC_Necanicum%20River%20Watershed%20Assessment.pdf. Retrieved May 12, 2009. 

External links

• Historic images of the Necanicum River from Salem Public Library
• Necanicum River Watershed (archived)