Dam Hazard Class | Dam Size Classification | IDF Magnitude |
Very Low | All Sizes | 100-year |
Low | All Sizes | 0.25 PMF |
Significant | Small Intermediate Large | 0.25 PMF 0.5 PMF 0.5 PMF |
High* | All Sizes | * |
* For a high hazard potential dam, the applicant shall design the dam to withstand an inflow design flood that varies from .5 PMF to the full PMF, with size increasing based on persons at risk and potential for downstream damage. The applicant shall consider foreseeable future conditions.
Ariz. Admin. Code tit. 12, ch. 15, art. 12, tbl. 4