Mill Watershed Assessment

Identification Information

Citation

Originator: Yamhill Basin Watershed Council

Publish Date: December 30, 1999

Online Link: http://www.co.yamhill.or.us/ybc/Assessments/MillCrkAssmnt.pdf

BPA Project #:

Contact Information

Agency: Watershed Councils

Name: Jamie Sheahan

Job Position: Yamhill Basin Watershed Council Coordinator

Telephone: (503) 434-7447

E-Mail Address: sheahanj@co.yamhill.or.us

Description

Abstract: The Mill watershed assessment was conducted to determine how well the watershed is working to produce clean water and healthy fish and wildlife habitats. The assessment process consolidated all known information on the watershed including historical records, scientific data, federal, state and local agency reports, and personal interviews with long time residents. This information was then used to identify specific areas in the watershed where restoration or preservation efforts should be focused. The assessment also identifies specific areas of the watershed where data gaps exist and where we have very little information about the overall watershed condition. This assessment begins with an Introduction chapter that reports general watershed information such as: climate, population, geology, agricultural production, fire histories, and vegetation. The watershed condition assessment then consists of ten components including Watershed History, Channel Habitat Types, Fish, Riparian and Wetland Conditions, Channel Modifications, Hydrology and Water Use, Water Quality, Sediment Sources and Restoration Efforts. In each of the components, a brief description of the methodology is followed by a list of information and procedures that were or were not covered during the assessment process. The findings from each assessment component were then used in a decision matrix to identify specific areas of the watershed where protection, restoration, or more information is required.

Purpose: The Mill watershed assessment was prepared for the Yamhill Basin Council (YBC) and watershed residents and landowners. It contains technical information about the past and present watershed conditions. The primary purpose of the assessment is to evaluate how natural and human processes influence the watershed’s ability to produce clean water and suitable habitat for aquatic life. It will serve as a baseline for developing and prioritizing restoration activities. The information collected in this assessment is intended to aid the YBC and the community in developing restoration projects and monitoring plans for the Mill watershed.

Time Period of Content:

Geographic Extent: The Mill watershed is located in the Yamhill River Basin in the northwestern part of the Willamette Valley. The 33,920-acre watershed is situated on the eastern slope of the Coastal Mountain range and generally flows north toward the South Yamhill River.

Status: Complete

Use Constraints:

Format: PDF file

Data Quality Information

Lineage-Source:

Data Information

No data information was supplied.

Entity and Attribute Information

Attributes Description:

Is a physical copy maintained for reference at Headquarters? Unknown