Assess Current and Potential Salmonid Production in Rattlesnake Creek in Association with Restoration Efforts, US Geological Survey Report, 2004-2005 Annual Report.

Allen, M. Brady; Connolly, Patrick J.; Jezorek, Ian G.

doi:10.2172/900556

Cited by 4 publications

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“…Prior to the dam breaching, White Salmon River spring Chinook Salmon, Coho Salmon, and steelhead were considered extirpated, and the fall Chinook Salmon were considered at very high risk of extinction (National Marine Fisheries Service [NMFS] 2013). As shown by Allen and Connolly (2005) and Allen et al (2006Allen et al ( , 2012, the White Salmon River and its tributaries upstream of where Condit Dam was located have high potential to support reintroduced or naturally colonizing populations of anadromous Salmon and steelhead. Based on modeling efforts, the expected response to reconnecting the upper White Salmon River to the Columbia River was an increase in natural production of several anadromous fish species (Table 2; NPCC 2004;Allen and Connolly 2005).…”

Section: Fish Distributionsmentioning

confidence: 99%

“…Ecosystem diagnosis and treatment modeling (Mobrand et al 1997) was conducted by USGS and WDFW to estimate the historical, current (with the dam in place), and future (with the dam removed) fish population abundance and productivity (Allen and Connolly 2005). Studies by USGS and YN in Rattlesnake and Buck creeks, the two main tributaries within the potential anadromous zone of the White Salmon River, provided evidence via passive integrated transponder tagging that the Rainbow Trout populations were still producing migratory and potentially anadromous offspring (Allen et al 2006. These studies detected three juvenile Rainbow Trout/ steelhead in the mainstem Columbia River (fish that had been initially captured and tagged in Rattlesnake and Buck creeks), indicating an attempt at anadromous migration nearly 100 years after Condit Dam had blocked upstream access.…”

Section: Working Group Effortsmentioning

confidence: 99%

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2016

Fisheries

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Section: Fish Distributionsmentioning

confidence: 99%

Section: Working Group Effortsmentioning

confidence: 99%

Full Issue PDF, Volume 41, Issue 4

2016

Fisheries

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“…The upper falls, at rkm 17, has two separate drops of about 22-25 m each and is a fish barrier. Allen, Connolly, Jezorek, Munz, and Charrier (2006) reported that habitat conditions in all reaches of Rattlesnake Creek were poor. Pool frequency and quality were low.…”

Section: Description Of Study Sitementioning

confidence: 99%

“…Counts of LWD were low and riparian condition was degraded (Allen, Connolly, Jezorek, Munz, and Charrier, 2006;Plummer and Zuckerman, 2012). Discharge in Rattlesnake Creek is extremely low during summer (Northwest Power and Conservation Council, 2004;Allen and Connolly, 2005;Allen, Connolly, Jezorek, Munz, and Charrier, 2006;Plummer and Zuckerman, 2012). Discharge near the mouth of Rattlesnake Creek can be less than 0.0018 m 3 /s and surface flow in riffles is barely discernible in some reaches.…”

Section: Description Of Study Sitementioning

confidence: 99%

“…Fish and Wildlife Service (FWS) assessed species composition and relative abundance of juvenile salmonids downstream of Condit Dam at rkm 1.5, using a rotary screw trap (Allen and Connolly, 2011). Additionally, tributary habitat and salmonid abundance data were collected in Buck and Rattlesnake Creeks others, 2003a, 2003b;Allen, Connolly, Jezorek, Munz, and Charrier, 2006;Allen and others, 2012). These existing pre-dam removal data offer a baseline for understanding changes in fish distribution, abundance, and genetics.…”

Section: Introductionmentioning

confidence: 99%

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Juvenile salmonid monitoring following removal of Condit Dam in the White Salmon River Watershed, Washington, 2017

Jezorek¹,

Hardiman²

2018

Open-File Report

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Condit Dam, at river kilometer 5.3 on the White Salmon River, Washington, was breached in 2011, and removed completely in 2012, providing anadromous salmonids with the opportunity to recolonize habitat blocked for nearly 100 years. Prior to dam removal, a multiagency workgroup concluded that the preferred salmonid restoration alternative was to allow natural recolonization. Monitoring would assess fish recolonization efficacy, followed by management evaluation 5 years after dam removal. Limited monitoring of salmon and steelhead recolonization has occurred since 2011. The U.S. Geological Survey began juvenile salmonid monitoring in 2016 and did a second year during 2017, with sampling efforts like those of 2016. River conditions differed between the 2 years, both during (that is, high flows in 2017) and prior to (that is, 2015 summer drought conditions and December 2015 White Salmon River flood event) sampling. We operated a rotary screw trap at river kilometer 2.3 (3 kilometers downstream of the former dam site) from early April through early June to assess species diversity, and production of smolt and other migrant life stages. We also used backpack electrofishing during summer to assess juvenile salmonid distribution and abundance. Both sampling methods provided the opportunity to collect genetic samples (analysis of samples was not covered under funding received from the Mid-Columbia Fisheries Enhancement Group for the 2017 monitoring efforts) and to tag fish with passive integrated transponder (PIT) tags, which will provide life-history data through future recaptures and detections. The screw trap captured steelhead (anadromous rainbow trout, Oncorhynchus mykiss), fry, parr, and smolts; coho salmon (O. kisutch) fry, parr, and smolts; and Chinook salmon (O. tshwaytscha) fry, parr, and one smolt. Prolonged high water and some missed trapping periods during 2017 prevented us from generating smolt estimates. Despite difficult trapping conditions, the number of coho salmon fry and parr, and steelhead fry and parr captured in 2017 exceeded those captured during 2016. The number of age-0 Chinook salmon captured in the screw trap during 2017 was much higher (n = 222) than in 2016 (n = 4). 2 Electrofishing in tributaries provided information on distribution and abundance of juvenile coho salmon and O. mykiss. Juvenile coho salmon were again found in Mill and Buck Creeks and, for the first time, in Rattlesnake Creek (all three creeks are upstream of the former dam site). In both Rattlesnake and Buck Creeks, age-0 O. mykiss abundance decreased between 2016 and 2017; however, age-1 and older O. mykiss and age-0 coho salmon abundance increased between years at both sites. Data on O. mykiss abundance at sites in Buck and Rattlesnake Creeks is providing the opportunity to begin to understand trends and variability post-dam removal and to compare to pre-dam removal periods. Mean age-0 O. mykiss abundance (fish per meter [fish/m]) at the Rattlesnake Creek site has been slightly lower during post-dam removal (mean = 3.0, n =...

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Salmon and Steelhead in the White Salmon River after the Removal of Condit Dam–Planning Efforts and Recolonization Results

et al. 2016

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Condit Dam, at river kilometer 5.3 on the White Salmon River, Washington, was breached in 2011 and completely removed in 2012. This action opened habitat to migratory fish for the first time in 100 years. The White Salmon Working Group was formed to create plans for fish salvage in preparation for fish recolonization and to prescribe the actions necessary to restore anadromous salmonid populations in the White Salmon River after Condit Dam removal. Studies conducted by work group members and others served to inform management decisions. Management options for individual species were considered, including natural recolonization, introduction of a neighboring stock, hatchery supplementation, and monitoring natural recolonization for some time period to assess the need for hatchery supplementation. Monitoring to date indicates that multiple species and stocks of anadromous salmonids are finding and spawning in the now accessible and recovering habitat.

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Assess Current and Potential Salmonid Production in Rattlesnake Creek in Association with Restoration Efforts, US Geological Survey Report, 2004-2005 Annual Report.

Cited by 4 publications

References 0 publications

Full Issue PDF, Volume 41, Issue 4

Full Issue PDF, Volume 41, Issue 4

Juvenile salmonid monitoring following removal of Condit Dam in the White Salmon River Watershed, Washington, 2017

Salmon and Steelhead in the White Salmon River after the Removal of Condit Dam–Planning Efforts and Recolonization Results

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