Water Supply Dams in Hawaii

Hawaii has 9 water supply dams, of which 7 carry a high hazard classification. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area.

#	Dam	County	Height (ft)	Hazard	Condition	Year
1	Waikoloa Reservoir No. 3	Hawaii	54	High	Fair	1985
2	Kahakapao Reservoirs	Maui	54	High	Poor	1990
3	Waikoloa Reservoir No. 1	Hawaii	44	High	Poor	1970
4	Olinda Reservoir	Maui	42	High	Poor	1918
5	Piiholo 50 Mg Reservoir	Maui	42	High	Unsatisfactory	1971
6	Waikoloa Reservoir No. 2	Hawaii	35	High	Fair	1975
7	Waikamoi Dam No. 2	Maui	35	Low	Poor	1956
8	Mahinahina Reservoir	Maui	34	High	Poor	1995
9	Waikamoi Reservoirs	Maui	20	Significant	Poor	1980

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