Research Publication No. 28

Heron Island Spoil Dump

M. R. Gourlay
Department of Civil Engineering
The University of Queensland

J.S. Jell
Department of Earth Sciences
The University of Queensland

August 1993

A Report To The Great Barrier Reef Marine Park Authority

COVER PAGE & VERSO [Adobe Acrobat Format 71.86KB]
TABLE OF CONTENTS [Adobe Acrobat Format 455.20KB]
EXECUTIVE SUMMARY [Adobe Acrobat Format 77.74KB]
PART ONE Short term monitoring and environmental effect
1. INTRODUCTION [Adobe Acrobat Format 162.95KB]
2. HERON ISLAND BOAT HARBOUR AND ITS GEOMORPHIC [Adobe Acrobat Format 309.64KB]
3. SETTING
  - Works Constructed Prior to 1987
  - Boat Harbour Enlargement Works 1987
  - Geomorphic Setting of Heron Island
4. 3. INVESTIGATIONS [Adobe Acrobat Format 640.77KB]
  - Objectives of Monitoring Programme
  - Field Work
  - Sedimentological Analyses
  - Surveys of Spoil Dump Size and Shape
  - Hydraulic and Meteorological Data Analyses
5. 4. RESULTS OF ANALYSES [Adobe Acrobat Format 3317.34KB]
  - Nature and Quantity of Material in Spoil Dump
    - The Spoil Dump
    - Subsurface Investigations of Spoil Dump
    - Nature of Subsurface Materials
    - Quantity of Material in Spoil Dump
  - 4.2 Conditions Affecting Spoil Dump
    - Nature of Conditions affecting Spoil Dump
    - Relative Influence of Various Factors
    - Overall Trends - May 1989 to April 1991
    - Wind Speeds, High Tide Levels and Plume Occurrences
    - Specific Silt-producing Events
    - Review of Conditions producing Silt Plumes
  - 4.3 Changes in Spoil Dump Shoreline
    - Shoreline Changes before September 1987
    - Shoreline Changes since Spoil Dump Formation
    - Synthesis of Beach Sediment Movements since December 1987
  - 4.4 Nature of Sediments Released from Spoil Dump
    - General Considerations
    - Natural Beach Sediments of Heron Island
    - Sediments on Spoil Dump Beach and its Vicinity
    - Silt in Spoil Dump, Plume and Reef Flat Deposits
  - Monitoring of Sediment-affected Beach Rock
  - Lithification and Vegetation of Spoil Dump Material
6. ASSESSMENT OF OVERALL SITUATION [Adobe Acrobat Format 284.51KB]
7. CONCLUSIONS [Adobe Acrobat Format 154.99KB]
  - Specific Conclusions Relating to Heron Island Spoil Dump
  - Some General Observations concerning Environmental Monitoring
8. RECOMMENDATIONS [Adobe Acrobat Format 206.65KB]
  - Short Term
  - Long Term
  - General
9. ACKNOWLEDGEMENTS [Adobe Acrobat Format 76.71KB]
10. REFERENCES [Adobe Acrobat Format 231.45KB]
11. TABLES
12. PHOTOS [Adobe Acrobat Format 5836.98KB]
13. FIGURES [Adobe Acrobat Format 3058.84KB]
14. APPENDICES
  1. Heron Island Coastal Observations . Data Recording Sheets [Adobe Acrobat Format 154.29KB]
  2. Coastal Observations - May 1990 to April 1991 [Adobe Acrobat Format 238.83KB]
  3. Coastal Observations - Significant Events [Adobe Acrobat Format 351.29KB]
  4. Specific Silt-producing Events [Adobe Acrobat Format 392.50KB]
  5. Spoil Dump Sediment Samples - Summary [Adobe Acrobat Format 184.62KB]
  6. Grain Size Distribution Curves [Adobe Acrobat Format 524.16KB]
PART TWO Report on effects of Tropical Cyclone Fran March 1992 [Adobe Acrobat Format 1143.77KB]
1. INTRODUCTION
2. HERON ISLAND AND TROPICAL CYCLONE FRAN
3. INVESTIGATIONS
  - 3.1 Objectives
  - 3.2 ,Field Work
  - 3.3 Sediment Analyses
  - 3.4 Surveys of Spoil Dump Size and Shape
  - 3.5 Hydraulic and Meteorological Data Analyses
4. RESULTS OF ANALYSES
  - Conditions affecting Spoil Dump during Tropical Cyclone Fran
    - Cyclonic Conditions affecting Coral Cay Beaches
    - Specific Conditions during Tropical Cyclone Fran
  - Quantity of Material in Spoil Dump
  - Changes in Spoil Dump Shoreline during Tropical Cyclone Fran
  - Changes in Reef-flat Sediments
5. CONCLUSIONS
6. RECOMMENDATIONS
7. ACKNOWLEDGEMENTS
8. REFERENCES
9. FIGURES [Adobe Acrobat Format 997.82KB]