Your Dam Your Responsibility (PDF~1.2MB)

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Contents
6 Safety Surveillance ......................................... 27
6.1 Purpose of Regular Inspection ..................................27
6.2 Inspection Procedures and Methods .............................28
6.3 Frequency of Inspections ......................................28
6.4 Special Inspections (immediately after major storm or
earthquake event). ...........................................29
6.5 Problems Likely to be Encountered ..............................30
6.6 How to Deal with Problems ....................................30
6.7 Inspection Checklists ..........................................31
7 Operation and Maintenance of Dams. ......................... 32
7.1 Control of Flows .............................................32
7.2 Routine Surveillance ..........................................32
7.3 Filling and Emptying ..........................................32
7.4 Maintenance ................................................33
7.5 Maintenance Problems ........................................33
7.5.1 Dispersive Clays ...............................................33
7.5.2 Seepage and Leakage. .........................................34
7.5.3 Erosion ......................................................35
7.5.4 Stock Damage . ...............................................36
7.5.5 Yabby Damage ...............................................36
7.5.6 Pest Animal Damage. ..........................................36
7.5.7 Cracking and Movement .......................................36
7.5.8 Defects in Associated Structures .................................37
7.5.9 Outlets and Valves. ............................................38
7.5.10Vegetation ...................................................39
7.6 Modifications. ...............................................40
8 Dam Failure Emergency Action ............................... 41
8.1 Extreme Events ..............................................41
8.2 Emergency Preparedness ......................................41
8.3 How to Deal with a Dam Failure Concern ........................42
8.3.1 Emergency Checklist ...........................................43
8.3.2 Contact Organisations for Advice . ...............................43
9 Decommissioning of Dams. .................................. 44
9.1 Removal or Decommissioning of a Dam ..........................44
9.2 Rehabilitation of Site .........................................44
9.3 Maintenance of Site Until Stable. ...............................45
10 Glossary of Terms .......................................... 46
11 References and Suggested Further Reading. .................... 51
Appendices
Appendix A: Conducting an Inspection ..............................52
Appendix B: Common problems – Their causes, consequences and
action required. ......................................58
Appendix C: Standard design guide for farm dams ....................72
Appendix D: Dam Safety Emergency Plan ............................82