Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Risk matrix. Risk levels are expressed as a function of hazard intensity (classified according to return period TR) and sensitivity: no (N), very low (VL), low (L), moderate (M), high (H), very high (VH).
| Sensitivity |
|||||
|---|---|---|---|---|---|
| No (N) | Low (L) | Moderate (M) | High (H) | ||
| Hazard intensity | Very high (TR ≥ 100yr) | N | M | H | VH |
| High (100yr>TR ≥ 50yr) | N | M | M | H | |
| Moderate (50yr > TR ≥ 20yr) | N | L | M | M | |
| Low (20yr > TR ≥ 10yr) | N | L | L | M | |
| Very low (10yr > TR ≥ 2yr) | N | VL | L | L | |
| No (TR < 2yr) | N | N | N | N | |
