Angler Surveyor Procedures Manual 2004; Willamette Salmonid Inventory Project

Identification Information

Citation

Originator: Oregon Department of Fish and Wildlife

Publish Date: 2004

Online Link: None

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Michelle Jones

Job Position: Quantitative Fisheries Scientist

Telephone: 503-947-6252

E-Mail Address: Michelle.K.Jones@odfw.oregon.gov

Description

Abstract: The Willamette Salmonid Inventory Project is charged with the task of monitoring the status of naturally produced and hatchery produced salmonid stocks. One important aspect of this monitoring effort is an estimate of fish that are caught in recreational fisheries. State and Federal fishery managers use the results of these surveys to manage Oregon's fisheries resources. The goal of the river creels is to estimate effort and catch of marked and unmarked spring chinook, steelhead, and young salmonids, including catchable rainbow, cutthroat and juvenile chinook and steelhead. The basic approach is a roving creel in which the sampler travels up and down the river interviewing bank anglers and boat anglers as they are encountered. The sampler queries anglers about catch numbers, catch composition, time spent fishing and other auxiliary information. At assigned times during the sampled day; the sampler travels the length of the river counting boat trailers (without boats), individual bank anglers at some locations, and cars at other locations. The goal of these counts is to estimate the number of people fishing at a given time. The goal of the Foster Reservoir creel survey is to estimate angler effort and catch of juvenile winter steelhead and trout throughout the year. The fishery has been surveyed at a reduced level of sampling effort during the winter and is now ramped up to a full time sampler. The basic approach is similar to that for the river creels. The results of these surveys are used in a variety of ways: 1. They allow us to assess how well the hatchery programs are serving the public by giving an estimate of how many hatchery-produced fish are caught. 2. By combining creel data with counts at fish ladders and hatchery traps, we can construct a more reliable estimate of how many fish return to sub-basins of the Upper Willamette. 3. Creel data help us to evaluate the effectiveness of the hatcheries’ recycling programs. 4. Data on how many naturally-produced (unmarked) fish are caught and released allow us to estimate mortality for naturally-produced fish. 5. Coded wire tag data are also used in making estimates of run size, and give information on the origin and stray rates of hatchery fish in the fishery.

Purpose:

Time Period of Content: 2004

Geographic Extent: Willamette River Basin

Status: Final

Use Constraints:

Format: PDF File

Data Quality Information

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Data Information

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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? Yes