Hatchery Coho Returns

Identification Information

Citation

Originator: Lewis, Mark

Publish Date: March 23, 2004

Online Link: None

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Cedric Cooney

Job Position: Natural Resources Data and Systems Manager

Telephone: 503-947-6094

E-Mail Address: Cedric.X.Cooney@odfw.oregon.gov

Description

Abstract: The excel spreadsheet data file associated with this report summarizes returns of coho adults and jacks to hatcheries and associated fish traps in the Oregon Coast Coho ESU, for the period 1990 through 2003. In some cases coho are collected at locations remote from the hatchery. The number of "off-site" collected fish brought to a hatchery for use in the hatcheries broodstock is reported separately from fish that swam into the hatchery volitionally. Such "off-site" locations are generally well removed from the hatchery location. These fish should be assumed to be wild fish although we don't always know for sure. The data is reported by run year and is summarized at 3 geographic levels; by population, by monitoring area, and total for the ESU. Returning hatchery coho adults have been massed marked since the 1998 run year. Thus, for the 1998 through 2003 run years the coho returns are reported as wild (unmarked) or hatchery (marked) fish. Prior run years only report the total coho returns to the hatchery. Winchester Dam counts are reported for the Upper Umpqua coho population and the Umpqua monitoring area because that is where Rock Creek hatchery collects most of their coho broodstock. Very few coho swim-in to the Rock Creek hatchery trap.

Purpose: The data presented is the best available information, and is appropriate to represent returns of coho to hatcheries and associated fish traps in the Oregon Coast Coho ESU. This data is a summary of the information available in the HMIS system. Un-summarized data, including specific date, size and location of release, is available by contacting ODFW hatchery staff located at the Salem headquarters.

Time Period of Content: Adult return years 1990 through 2003

Geographic Extent: Oreogn Coast Coho ESU

Status: Draft

Use Constraints:

Format: Microsoft Excel 2000

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 attached file(s).

Is a physical copy maintained for reference at Headquarters? Unknown