Table 3: Classification of dams in terms of incremental consequences of dam failure
Incremental consequence categories |
A. incremental consequences of failure from floods >IDF |
|
Incremental consequences of failure from other causes |
|
|
Incremental Hazeard-to-Humans Index, IhtHI (plus suggested corresp. IDF) |
Economic, social & environmental consideration |
Life safety consideration |
Economic, social & environmental Consideration |
Very High |
>100 (IDF: 100,000-yr/PMF) |
Extreme damage |
Large number of lives lost |
Extreme damage |
High |
1 to100 (IDF: 1000-to100,000-yr/PMF) |
Large damage |
Some lives lost |
Large damage |
Low |
<1 (IDF: <1000-year) |
Moderate damage |
Less than one life lost |
Moderate damage |
Very low |
0 |
Minor damage beyond owners property |
No life lost |
Minor damage |