The Effects of Villwok's Ford on Native and Exotic Fishes of Rickreall Creek

Identification Information

Citation

Originator: Rickreall Watershed Council & Oregon State University

Publish Date: 2003

Online Link: None

BPA Project #:

Contact Information

Agency: Watershed Councils

Name: Charles Redon

Job Position: Rickreall Watershed Council Coordinator

Telephone: (503) 623-9680 x112

E-Mail Address: Rickreallwc@hotmail.com

Description

Abstract: Rickreall Creek is a 4th order tributary of the Willamette River in Polk County, Oregon (Mattson and Gallagher 2001). Previous fish sampling had indicated a high percentage of exotic fishes in the lower portion of the creek (Altman 1997) and in an upstream reservoir (Chastain et. al. 2002). However, within the mainstem, exotic fishes (with the exception of planted juvenile coho) are absent above Villwok's Ford, the lowermost barrier on the creek at about river km 12.7 (Chastain et. al. 2002). A 1995 CH2MHill survey noted the ford was a culvert and not passable while Mattson and Gallagher (2001) found water flowing over the ford and fish passage "appeared possible". Because the ford appears to violate Oregon statutes regarding fish passage at man-made barriers, but may paradoxically provide benefits by excluding exotic fishes, we initiated a study of the ford and of a variety of fishes to determine the seasons and conditions during which the ford was a barrier to fish passage.

Purpose: A 1995 CH2MHill survey noted the ford was a culvert and not passable while Mattson and Gallagher (2001) found water flowing over the ford and fish passage "appeared possible". Because the ford appears to violate Oregon statutes regarding fish passage at man-made barriers, but may paradoxically provide benefits by excluding exotic fishes, we initiated a study of the ford and of a variety of fishes to determine the seasons and conditions during which the ford was a barrier to fish passage.

Time Period of Content:

Geographic Extent: Rickreall Creek and its tributaries

Status: Complete

Use Constraints:

Format: MS Word document

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Is a physical copy maintained for reference at Headquarters? Unknown