Summary
5 Reservoir, located in Hawaii, serves as a vital source of irrigation for the surrounding area, fed by an irrigation ditch. Completed in 1930, this earth dam stands at a height of 20 feet and has a storage capacity of 55 acre-feet. The reservoir covers 10.6 acres and plays a crucial role in supporting agricultural activities in the region. However, with a hazard potential rated as high and a poor condition assessment, there are concerns about its safety and long-term viability.
Despite its age and current condition, Hawi No. 5 Reservoir remains an essential water resource for sustaining local agriculture. The dam's spillway, though uncontrolled, serves to manage water levels effectively. The reservoir is under state regulation and inspection, with the Department of Land and Natural Resources overseeing permitting, inspection, and enforcement. The risk assessment for the dam is moderate, indicating a need for continued monitoring and potential risk management measures to ensure its stability in the face of changing climate conditions.
For water resource and climate enthusiasts, Hawi No. 5 Reservoir presents an intriguing case study in the intersection of infrastructure, water management, and climate resilience. As the reservoir faces challenges related to its age and structural integrity, there is a pressing need for ongoing assessment and potential upgrades to ensure its continued functionality in the face of evolving climate patterns. The reservoir's location in a region prone to natural hazards amplifies the importance of proactive risk management strategies to safeguard this essential water source for future generations.
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Humidity
15-Day Weather Outlook
Year Completed |
1930 |
Dam Length |
1500 |
Dam Height |
20 |
River Or Stream |
FED BY IRRIGATION DITCH |
Primary Dam Type |
Earth |
Surface Area |
10.6 |
Hydraulic Height |
20 |
Nid Storage |
55 |
Structural Height |
24 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
24 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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.
Hawi No. 5 Reservoir