FLOOD04994

• County: Statewide
• Community: na
• Basin: Statewide
• Title: Guidelines on Selection of Acceptable Flood Capacity for Dams
• Date: 3/1/2000
• Prepared By: Australian National Committee on Large Dams
• Floodplain - Doc Type: Educational/Technical/Reference Information

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Appendix 2: Commentary

TABLE of CONTENTS

Page

A2.1. BACKGROUND

A2-3

A2.2. RELATED GUIDELINES

A2-4

A2.3. IMMINENT FAILURE FLOOD (IFF, SCF, DCF)
A2.3.I, The Term IFF
A2.3.2. TheTerm SCF
A2.3.3. Dam Crest Flood
A2.3.4. Safety & Failure Stages
A2.3.5. Imminent Failure Condition

A2-5
A2-5
A2-5
A2-5
A2-6

A2.4. SPILLWAY ARRANGEMENTS
A2.4, L Proposed Dams
A2.4.2. Existing Dams
A2.4.3. Unlined Spillways

A2-6
A2-7
A2-7

A2.5, FLOOD ROUTING & FREEBOARD ESTIMATION
A2.5.1. Flood Routing
A2.5.2. Freeboard Provision
A2.5.3. Factors to Assess
A2.5.4. Deterministic Basis
A2.5.5. Risk Basis
A2.5.6, Decision
A2.5, 7, References

A2-7
A2-8
A2-8
A2-8
A2-8
A2-9
A2-9

A2.6. WARNING & EVACUATION PLANS

A2.7, FALLBACK OPTION
A2,7.1. Background
A2,7.2. Fallback Provision
A2,7.3. Base Safety Condition

A2-9

A2-IO
A2-1O
A2-1O
A2-1I

A2.8, CONSTRUCTION FLOODS
A2.8, L General Considerations
A2.8.2. 1986 ANCOLD Guidelines
A2,8,3. Proposed Dams
A2.8,4. Existing Dams
A2.8.5. Guidelines

A2-12
A2-I2
A2-I2
A2-I2
A2-13

A2,9. MINING DAM SPILLWAY PROVISIONS

A2-13

A2JO. FLOOD MlTIGATION

A2-13

A2-2 ANCOLD Guidelines on Selection of an Acceptable flood Capacity for Dams