Honokowai Reservoir Reservoir Report
Last Updated: December 19, 2025
Located in Honokowai, Maui, Hawaii, the Honokowai Reservoir, also known as Field 3 Reservoir, is a private water storage facility primarily used for irrigation purposes.
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Summary
Built in 1918, this earth dam structure stands at 31 feet tall with a storage capacity of 12.3 million gallons of water. With a surface area of 1.2 acres and a hydraulic height of 26 feet, the reservoir plays a crucial role in supporting agricultural activities in the area.
Managed by the Hawaii Department of Land and Natural Resources (DLNR), the Honokowai Reservoir is subject to state regulations, inspections, and enforcement to ensure its safe operation. Despite being classified as having a high hazard potential, the reservoir's condition is assessed as fair, with inspection frequency set at every 5 years. In case of emergencies, preparations are made and updated regularly to meet safety guidelines, highlighting the importance of water resource management in the face of potential risks and climate challenges.
As a key component of the local water infrastructure, the Honokowai Reservoir serves as a vital resource for sustaining agricultural activities in the region. With its historical significance dating back over a century, this reservoir showcases the intersection of human ingenuity and environmental stewardship in managing water resources for the benefit of the community.
Year Completed |
1918 |
Dam Length |
317 |
Dam Height |
31 |
River Or Stream |
UNNAMED STREAM |
Primary Dam Type |
Earth |
Surface Area |
1.2 |
Hydraulic Height |
26 |
Nid Storage |
12.3 |
Structural Height |
29 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Honokowai Reservoir