Guidelines
General Dam Safety Guidelines
- The Design and Construction of Small Embankment Dams (R88-June 1992) (PDF)
- Safety Inspection of Dams (R92 – December 1992) (PDF)
- Cross-Section Sample (PDF)
Seismic Hazard
- Seismic Analysis & Post-Earthquake Inspections (C131-April 2004) (PDF)
- Seismic Hazard Assessment for All High Hazard and select Significant Hazard Dams (2023) (PDF) (Note: Additional Site-Specific Assessments for dams are available under the Activity Tab for the specific dam upon login to the Dam Inventory Management System)
Hydrologic (State Rainfall Data)
- Statewide Probable Maximum Precipitation (PMP) Study for Hawaii Final Report (2023) (PDF)
- Statewide Probable Maximum Precipitation Study for Hawaii Storm Data Index (Appendix G) (2023) (PDF)
- Appendices to the Statewide Probable Maximum Precipitation (PMP) Study for Hawaii (2023) (PDF)
- PMP Evaluation Tool Description and Instructions (PDF)
- PMP Evaluation Tool Download (ZIP) The PMP evaluation tool requires a desktop license of ArcGIS as well as a compatible file of the polygon of the watershed or area of interest. Dam owners or their representatives can also request that Dam Safety staff provide the data to them for a specific area, but dam owners must provide an ArcGIS compatible polygon of the area of interest (such as a shapefile or geodatabase).
Emergency Action Plans (EAP)
Regulated dam owners are required to create their EAPs using the EZ-EAP tool which can be accessed by logging into the Dam Inventory Management System.
- Guidance to updating Emergency Action Plans using the EZ-EAP tool (PDF)
- Creating an EAP Using the EZ-EAP (Video)