7869

• UCREFRP Catalog Number: 7869
• Author: FLO Engineering, I.
• Title: Concept Development Report, Grand Valley Irrigation Company, Diversion Dam Fish Passage Structure, Palisade, CO.
• USFW Year: 1996.
• USFW - Doc Type: Contract No. 1425-6-CA-40-1730A,
• Copyright Material: NO

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TABLE OF CONTENTS
I. INTRODUCTION ................................................................. 1
II. SITE DESCRIPTION AND BACKGROUND ............................................ 2
2.1 History .....................................;.............................. 2
2.2 Physical Layout of Diversion Facility ............................................. 2
2.3 Operation .................................................................. 5
2.4 Data Collection .............................................................. 6
III. HYDROLOGY ................................................................... 7
3.1 Floods .................................................................... 7
3.2 Average Monthly Flows ....................................................... 7
3.2.1 System Description ..................................................... 8
3.2.2 Results ............................................................... 9
IV. HYDRAULICS ....................................................... .......... 9
4.1 Site Conditions ............................................................. 14
4.2 Data ..................................................................... 15
4.3 Assumptions and Procedures ................................................. 17
4.4 Results ................................................................... 18
4.4.1 Water Surface Elevation versus Total Flow .................................. 19
4.4.2 Flow Distribution Over the Weir ........................................... 19
V. FISH PASSAGE ALTERNATIVES ................................................... 26
5.1 Fish Passage Criteria ........................................................ 26
5.1.1 Migration ............................................................. 30
5.1.2 Swimming Ability ...................................................... 31
5.1.3 Behavior ............................................................. 32
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5.1.4 Summary of Criteria 32
5.2 Screening of Initial Concepts .................................................. 33
5.3 Descriptions of Alternatives ................................................... 35
5.3.1 Alternative1 .......................................................... 35
5.3.2 Alternative 2 .......................................................... 38
5.3.3 Alternative 3 .......................................................... 48
5.4 Preliminary Evaluation of Alternatives ........................................... 51
5.4.1 Fish Passage Structure Cost ............................................. 51
5.4.2 Range of Operation (Migration) ........................................... 51
5.4.3 Swimming Ability ...................................................... 51
5.4.4 Fish Behavior ......................................................... 51
5.4.5 Flow Patterns and Attraction ............................................. 52
5.4.6 GVIC Operation ........................................................ 52
5.4.7 Maintenance .......................................................... 53
5.4.8 Flow Requirements .................................................... 53
5.5 Additional Design Considerations .............................................. 53
5.5.1 Fish Screens ......................................................... 53
5.5.2 Physical Model ........................................................ 54
5.5.3 Flow Patterns and Fish Attraction ......................................... 54