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TABLE OF CONTENTS 1. INTRODUCTION .......................................................................................................................... 1-1 1.1 Purpose of Study ....................................................................................................................... 1-1 1.2 Objective ................................................................................................................................. 1.3 Overview of Existing Control Technology ............................................................................. .. 1-1 .. 1-1 1.3.1 Summary of Information Sources, Geographic Locations, and Target Fish Species...... .. 1-2 1.3.2 General Characteristics of Exclusion Facilities ............................................................... 1.3.3 Existing Control Types .................................................................................................... .. 1-2 .. 1-3 1.3.3.1 General ...................................................................................................................... .. 1-3 1.3.3.2 Low Velocity .............................................................................................................. 1-3 1.3.3.3 High Velocity .............................................................................................................. 1-3 i 1.3.3.4 Behavioral ................................................................................................................. .. 1-4 1.3.3.5 Other Technologies ..................................................................................................... 1-4 1.3.4 High Velocity Screens ............................................................................ 1-7 1.3.4.1 Modular Inclined Screen ........................................................................................... .. 1-7 1.3.4.2 Eicher .......................................................................................................................... 1-8 1.3.4.3 Coanda ...................................................................................................................... 1-10 1.3.5 Low Velocity Screens - Traveling ................................................................................... 1-12 1.3.5.1 Rotating Drum ...................................................:...................................... ................ 1.3.5.2 Plate .......................................................................................................................... 1-12 1-15 1.3.6 Low Velocity Screens - Fixed ......................................................................................... 1-17 1.3.6.1 Cylindrical ................................................................................................................ 1-17 1.3.6.2 Plate .......................................................................................................................... 1-18 1.3.6.3 Barrier Nets ............................................................................................................... 1-21 1.3.7 Behavioral Barriers .......................................................................................................... 1-22 1.3.7.1 Electrical ................................................................................................................... 1.3.7.2 Sound ........................................................................................................................ 1-22 . 1-23 1.3.7.3 Lights ...................................................................................:.................................... 1-24 1.3.7.4 Louvers ..................................................................................................................... 1-25 1.3.8 Other Control Techniques ................................................................................................ 1-26 1.3.8.1 Management Options ................................................................................................ 1-26 1.3.8.2 Other Structures Found But Not Directly Applicable .............................................. 1.3.8.3 Other Behavioral Techniques Found But Not Directly Applicable .......................... 1-27 1-27 1.3.9 Examples of Other Downstream Passage Limitation Projects ........................................ 1-28 1.3.9.1 Introduction ............................................................................................................... 1.3.9.2 McCloskey Canal ...................................................................................................... 1-28 1-28 1.3.9.3 Havasu Pump Plant ................................................................................................... 1-30 ` 1.4 Conclusion .............................................................................................................................. 2. PROJECT DESCRIPTIONS ........................................................................................................ 1-33 .. 2;1 2.1 Elkhead ............................ ................ .. 2-1 2. 1.1 Physical Configuration of Reservoir and Outlet .............................................................. 2.1.2 Hydrology ........................................................................................................................ .. 2-1 .. 2-4 2.1.3 Current Reservoir Operation and Fishery Management .................................................. .. 2-5 2.2 Highline .................................................................................................................................. 2.2.1 Physical Configuration of Reservoir and Outlet .............................................................. .. 2-6 .. 2-6 2.2.2 Hydrology ........................................................................................................................ 2-10 Control Structure Feasibility Evaluation Vi Miller Ecological Consultants, Inc., February 18, 1997