Passage Improvement Evaluations 198506200

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Passage Improvement Evaluations - 198506200

• Geoffrey McMichael
• Ecology Group
• Pacific Northwest National Laboratory
• Richland, Washington

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Background

• 1985-1990 Twelve Phase I sites
• Mark-recapture studies and velocity measurements
• Lab studies
• submerged orifice vs overflow weir
• Tests of infrasound and strobe lights
• Angled vs perpendicular
• Fixed plate vs drum
• Mesh size/screen area
• Shifted to Phase II sites starting in 1997
• Emphasis on velocities and screens/seals

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Rationale

• 2000 NMFS BiOp
• Action 149- address all flow, passage, and
  screening problems in each Subbasin over 10
  years.
• Species to benefit
• ESA
• Steelhead
• Bull Trout
• Supplementation Programs
• Spring chinook salmon
• Coho salmon
• Yakima Subbasin Summary FW Needs
• Continue monitoring new and existing fish
  passage facilities within the Yakima River basin
  to ensure they are adequately protecting fish and
  are being operated and maintained to meet NMFS
  fish protection criteria.

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Questions answered by Phase II Evaluations

• 1.     Are screens designed, operated, and
  maintained to meet NMFS criteria standards over a
  wide range of conditions?
• 2.     Do velocities/flows meet NMFS criteria?
• 3.     Are screens effective at protecting fish
  from injury and from unnecessary migration delay?

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Specific Objectives

• Evaluations are performed to determine if
• Flows in front of screens promote fish bypass
  without chance of delay or impingement
• Screens are adequately sealed to prevent fish
  injury or entrainment
• Screen submergence levels preclude fish
  roll-over, yet promote debris removal
• Bypass and outfall conditions promote safe fish
  return to the river
• Conditions in front of the screens deter
  predation of juvenile salmonids
• Site inspections/consultation on request when
  conditions change (e.g., drought 2001)

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Study Area
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Approach

• Three site visits/year spring/summer/fall
• Approach, sweep, and bypass velocities
• electromagnetic Marsh-McBirney 511 at some
  sites
• Acoustic Doppler Velocimeter (SonTek ADV) at
  sites where electrical interference precludes use
  of the 511
• Video examination of screens/seals/debris
• Checklist for debris, cleaning system, bypass
  conditions, silt, screen submergence
• Problems are reported to WDFW (proj. 199200900-
  phase 2 OM)

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Relationship to other Projects

• Three general categories r.e., fish screens in
  Yakima Subbasin
• Design/Construction 199105700 WDFW and
  199107500 USBR
• Operation/Maintenance 199200900 WDFW and
  199503300 USBR
• Evaluation/Inspection and technical services
  198506200 - PNNL

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Example of Velocity Data
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Example of Video Bad Seal
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Another Bad Seal
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Project Info via the Web

• http//www.pnl.gov/ecology/library/Screen/Screen.h
  tml

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Site Description/photos
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Reports