Maui Reservoir 20, also known as Hc&S Reservoir 20, is a privately owned water storage facility located in Haliimaile, Maui, Hawaii.
Wind
Humidity
Built in 1913, this Earth-type dam stands at a height of 42 feet and has a maximum storage capacity of 164.8 acre-feet. The reservoir primarily serves the purpose of irrigation, being fed by an irrigation ditch.
Despite its historical significance and essential role in supporting agricultural activities in the region, Maui Reservoir 20 poses a high hazard potential due to its poor condition assessment. With a moderate risk rating, there is a pressing need for maintenance and risk management measures to ensure the safety and functionality of this critical water resource infrastructure. The last inspection in August 2020 revealed the dam's deteriorating state, emphasizing the urgency for rehabilitation and emergency preparedness.
As a key component of Hawaii's water resource infrastructure, Maui Reservoir 20 requires attention and investment to address its aging infrastructure and mitigate potential hazards. With state regulation and inspection in place, stakeholders must collaborate to safeguard this vital reservoir for sustainable water management and climate resilience in Maui County.
Year Completed |
1913 |
Dam Length |
1320 |
Dam Height |
42 |
River Or Stream |
FED BY IRRIGATION DITCH |
Primary Dam Type |
Earth |
Surface Area |
10.2 |
Hydraulic Height |
35 |
Drainage Area |
0.09 |
Nid Storage |
164.8 |
Structural Height |
37 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
42 |