Your Dam Your Responsibility (PDF~1.2MB)

Contents
Preface........................................................iv
1 Introduction ................................................ 1
2 Risks Posed by Dams. ........................................ 3
2.1 Owner’s Responsibilities ........................................3
2.2 Definition of a Dam ...........................................3
2.3 Potentially Hazardous Dams ....................................4
2.4 Likelihood of a Dam Failing .....................................4
2.5 Complaint or Incident. .........................................5
2.6 Consequence of Failure ........................................6
2.7 Insurance ....................................................6
2.8 Buying a Property with a Dam. ..................................7
3 Licensing Requirements for Farm Dams ......................... 8
3.1 Take and Use Licences. .........................................8
3.2 Construction Licences ..........................................8
3.3 Operating Licences ............................................8
3.4 Licensing Authorities ..........................................9
3.5 Licensing Process ..............................................9
3.6 Environmental Requirements for New Dams (on or off Waterways). ..10
3.7 On-site Environmental Issues for Dams on Waterways ..............11
4 Planning to Build a Dam ..................................... 13
4.1 Dam Features. ...............................................13
4.2 Services of an Engineer. .......................................14
4.3 Types of Dams ...............................................15
4.4 Site Investigations ............................................17
4.4.1 Selecting the Dam Site . ........................................17
4.4.2 Site Studies. ..................................................18
4.5 Considerations at Investigation Stage. ...........................19
4.5.1 Environmental................................................19
4.5.2 Compensation Flow Requirements . ..............................19
4.5.3 By-Pass Channels ..............................................20
4.6 Dam Design . ................................................20
4.6.1 Standard Designs. .............................................20
4.6.2 Extreme Events ...............................................21
4.7 Health and Safety Issues .......................................21
5 Construction of a Dam ...................................... 22
5.1 Selecting a Contractor ........................................22
5.2 Construction Supervision ......................................22
5.3 Dam Foundations ............................................22
5.4 Embankment Materials and Construction ........................23
5.4.1 Selection of Materials ..........................................23
5.4.2 Placement of Embankment Materials. ............................24
5.4.3 Compaction of Embankment Materials ...........................24
5.5 Outlet Pipes or Structures in Embankment. .......................25
5.6 Spillways. ...................................................26
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