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South Santiam Watershed Assessment

Identification Information

Originator: E&S Environmental Chemistry, Inc. and South Santiam Watershed Council
Publish Date: January 2000
Online Link: None
BPA Project #:
Contact Information
Agency: Oregon Watershed Enhancement Board
Name: Ashley Seim
Job Position: GIS and Web Site Specialist
Telephone: 503-986-0186
E-Mail Address:
Abstract: The South Santiam River drains approximately 1,040 square miles and is a primary tributary to the Willamette River. The South Santiam River watershed is situated in the Western Cascades and flows into the Willamette Valley. The River runs approximately from east to west, with steep mountainous terrain comprising the eastern 80% of the watershed. The western 20% of the watershed leading to the Santiam River and ultimately the Willamette River, is comprised of a floodplain dominated by grass seed farming and urban/rural development. The basin ranges in elevation from 220 feet to approximately 5,721 feet. The South Santiam watershed was divided into an upper section (Headwaters, Quartzville, Middle Santiam and Foster watersheds) and a lower section (Lower South Santiam, Crabtree, Thomas, and Wiley subwatersheds) due to ecological differences such as ecoregion, management, and elevation. The assessment was conducted in six parts including Channel Habitat Typing, Channel Modification, Riparian, Water Use and Hydrology, Fisheries, and Water Quality. Following is a summary of results from each of the sections.
Purpose: The purpose of this watershed assessment is to evaluate the current conditions of the South Santiam Watershed and to provide recommendations that address the issues of water quality, fisheries and fish habitat, and watershed hydrology. This assessment was conducted following the guidelines outlined in the draft Governor’s Watershed Enhancement Board (GWEB) watershed assessment manual (Oregon Watershed Assessment Manual (OWAM)).
Time Period of Content:
Geographic Extent: South Santiam Watershed, Willamette Basin
Status: Final
Use Constraints:
Format: PDF
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Attributes Description: Field attribute information is available in the database table field decsriptions.

File Name File Type Category File Uploaded
South_Santiam_Watershed_Assessment_January2000.pdf Document File 4/12/2011 4:49:15 PM

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