South Santiam River
Encyclopedia
The South Santiam River is a tributary of the Santiam River
, about 66 miles (106.2 km) long, in western Oregon
in the United States
. It drains an area of the Cascade Range
into the Willamette Valley
east of Corvallis
.
It rises in the Cascades in southeastern Linn County
in the Willamette National Forest
at 44.3742917°N 122.2181280°W. It flows briefly north, then generally west through the Western Cascades
and Cascadia
. It then flows a handful of miles before entering Foster Reservoir
. At Foster Reservoir the Middle Santiam river joins the South Santiam. Downstream from the reservoir it flows west past Sweet Home
, where it turns northwest, passing through the foothills into the Willamette Valley near Lebanon
. It joins the North Santiam River
from the southeast to form the Santiam approximately 15 mi (24 km) northeast of Lebanon, approximately 10 miles (16 km) east of the confluence of the Santiam with the Willamette River
.
U.S. Route 20 follows the valley of the river from near its headwaters in the mountains to the Willamette Valley
northwest of Lebanon
.
Santiam River
The Santiam River is a tributary of the Willamette River, about long, in western Oregon in the United States. Through its two principal tributaries, the North Santiam and the South Santiam rivers, it drains a large area of the Cascade Range at the eastern side of the Willamette Valley east of...
, about 66 miles (106.2 km) long, in western Oregon
Oregon
Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
. It drains an area of the Cascade Range
Cascade Range
The Cascade Range is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as the North Cascades, and the notable volcanoes known as the High Cascades...
into the Willamette Valley
Willamette Valley
The Willamette Valley is the most populated region in the state of Oregon of the United States. Located in the state's northwest, the region is surrounded by tall mountain ranges to the east, west and south and the valley's floor is broad, flat and fertile because of Ice Age conditions...
east of Corvallis
Corvallis, Oregon
Corvallis is a city located in central western Oregon, United States. It is the county seat of Benton County and the principal city of the Corvallis, Oregon Metropolitan Statistical Area, which encompasses all of Benton County. As of the 2010 United States Census, the population was 54,462....
.
It rises in the Cascades in southeastern Linn County
Linn County, Oregon
Linn County is a county located in the U.S. state of Oregon. It is named in honor of Lewis F. Linn, a U.S. Senator from Missouri who advocated the American occupation of the Oregon Country. By the 2010 US census the population of Linn county was 116,672 showing a 13.2% growth since the 2000 census...
in the Willamette National Forest
Willamette National Forest
The Willamette National Forest is a National Forest located in the central portion of the Cascade Range of US state of Oregon.It comprises 1,675,407 acres making it one of the largest national forests. Over 380,000 acres are designated wilderness which include seven major mountain peaks...
at 44.3742917°N 122.2181280°W. It flows briefly north, then generally west through the Western Cascades
Western Cascades
Portions of this article include public domain text from the USFS .The Western Cascades is a region of Oregon, USA containing many shield volcanoes, cinder cones and lava flows. The region was volcanically active from approximately 5-0.5 million years ago...
and Cascadia
Cascadia, Oregon
Cascadia is an unincorporated community that was established in 1892 on the South Santiam River, east of the current city of Sweet Home, in Linn County, Oregon, United States. Originally a stage stop on the Santiam Wagon Road, then a summer resort also known as Cascadia Mineral Springs, Cascadia...
. It then flows a handful of miles before entering Foster Reservoir
Foster Reservoir
Foster Reservoir is a reservoir created by Foster Dam on the South Santiam River near the city of Sweet Home, Oregon, United States. The reservoir is approximately 5.6 km long and contains approximately 494 ha when full. Primary use of the reservoir is recreation in the summer and flood...
. At Foster Reservoir the Middle Santiam river joins the South Santiam. Downstream from the reservoir it flows west past Sweet Home
Sweet Home, Oregon
Sweet Home is a city in Linn County, Oregon, United States. The population was 8,016 at the 2000 census. Sweet Home is sometimes referred to as the "Gateway to the Santiam Playground", due to its proximity to nearby lakes, rivers and the Cascade Mountains....
, where it turns northwest, passing through the foothills into the Willamette Valley near Lebanon
Lebanon, Oregon
Lebanon is a city in Linn County, Oregon, United States. Lebanon is located in northwest Oregon, southeast of Salem. The population was 12,950 at the 2000 census and the 2008 census data shows the population at 15,397.-Geography:...
. It joins the North Santiam River
North Santiam River
The North Santiam River is a tributary of the Santiam River in western Oregon in the United States. It drains of the Cascade Range on the eastern side of the Willamette Valley east of Salem....
from the southeast to form the Santiam approximately 15 mi (24 km) northeast of Lebanon, approximately 10 miles (16 km) east of the confluence of the Santiam with the Willamette River
Willamette River
The Willamette River is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is long, lying entirely in northwestern Oregon in the United States...
.
U.S. Route 20 follows the valley of the river from near its headwaters in the mountains to the Willamette Valley
Willamette Valley
The Willamette Valley is the most populated region in the state of Oregon of the United States. Located in the state's northwest, the region is surrounded by tall mountain ranges to the east, west and south and the valley's floor is broad, flat and fertile because of Ice Age conditions...
northwest of Lebanon
Lebanon, Oregon
Lebanon is a city in Linn County, Oregon, United States. Lebanon is located in northwest Oregon, southeast of Salem. The population was 12,950 at the 2000 census and the 2008 census data shows the population at 15,397.-Geography:...
.