South Santiam Watershed Assessment

Identification Information

Citation

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: ashley.seim@state.or.us

Description

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

Data Quality Information

Lineage-Source:

Data Information

No data information was supplied.

Entity and Attribute Information

Attributes Description: Field attribute information is available in the database table field descriptions.

Is a physical copy maintained for reference at Headquarters? Unknown