Steelhead Escapement Monitoring In the Upper Grande Ronde River - Annual Technical Report 2011

Identification Information

Citation

Originator: Dobos, M. E., C. D. Horn, E. R. Sedell, J. R. Ruzycki

Publish Date: 2012

Online Link: None

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Chirs Horn

Job Position: Assistant Project Leader

Telephone: 541-962-3763

E-Mail Address: Christopher.D.Horn@odfw.oregon.gov

Description

Abstract: The UGRR basin supports a population of summer steelhead that has been segregated from three other populations in the entire Grande Ronde River basin based on topographic, genetic, observational, and other evidence of interactions. Historically, the Grande Ronde River was one of the more significant anadromous fish producing rivers in the Columbia River Basin. Summer steelhead in the Grande Ronde River basin compose part of the Snake River Distinct Population Segment (DPS) and are listed as threatened under the Endangered Species Act (62 FR 43937; August 18,1997). Despite recovery efforts, these populations remain depressed relative to historic levels. This project annually evaluates summer steelhead population abundance for the UGRR by conducting surveys of redds and spawning activity. These surveys provide the data needed to estimate adult steelhead escapement, improve our understanding of habitat utilization, and contribute to productivity and survival estimates for this population. Steelhead were monitored using a probabilistic sampling approach that incorporates a sample-site selection procedure created for the Environmental Protection Agency’s environmental monitoring and assessment program (EMAP). We used this EMAP design to select sample sites for status and trend monitoring of steelhead redds within the UGRR watershed. This method allowed us to sample spatially balanced survey sites distributed within the basin, and followed the Oregon Plan for Salmon and Watersheds Monitoring Program approach (Stevens 2002). ODFW- Eastern Oregon Fish Research (EOFR). BPA contract # IGC 51891

Purpose: 1. Estimate redd density and spawner escapement of summer steelhead for the Upper Grande Ronde River summer steelhead population. 2. Estimate spawners/redd above adult weir collection points and correlate independent counts.

Time Period of Content: 2010-2011

Geographic Extent: Upper Grande Ronde River Basin

Status: Final

Use Constraints:

Format: pdf

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Is a physical copy maintained for reference at Headquarters? Unknown