Irrigation Dams in Hawaii
Hawaii has 94 irrigation dams, of which 90 carry a high hazard classification. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area.
| # | Dam | County | Height (ft) | Hazard | Condition | Year |
|---|---|---|---|---|---|---|
| 1 | Wahiawa Dam | Honolulu | 98 | High | Poor | 1906 |
| 2 | Aepo Reservoir | Kauai | 74 | High | Fair | 1901 |
| 3 | Opaeula 01 Reservoir | Honolulu | 71 | High | Fair | 1910 |
| 4 | Horner Reservoir | Maui | 70 | High | Poor | 1926 |
| 5 | Mimino Reservoir | Kauai | 69 | High | Poor | 1920 |
| 6 | Waimanalo 60 Mg Reservoir | Honolulu | 65 | High | Fair | 1993 |
| 7 | Waikoloi Reservoir | Kauai | 64 | High | Poor | 1958 |
| 8 | Kahoma Reservoir | Maui | 60 | High | Poor | 1918 |
| 9 | Kualapuu Reservoir | Maui | 58 | High | Fair | 1969 |
| 10 | Piwai Reservoir | Kauai | 56 | High | Poor | 1916 |
| 11 | Kapaia Reservoir | Kauai | 53 | High | Poor | 1910 |
| 12 | Waimea 60 Mg Reservoir | Hawaii | 52 | High | Poor | 1957 |
| 13 | Wailuku Water Reservoir 10 | Maui | 52 | High | Unsatisfactory | 1951 |
| 14 | Upper Helemano Reservoir | Honolulu | 51 | High | Poor | 1912 |
| 15 | Kaneha Reservoir | Kauai | 51 | High | Poor | 1910 |
| 16 | Kaupale Reservoir | Kauai | 50 | High | Poor | 1910 |
| 17 | Ipuolono Reservoir | Kauai | 50 | High | Poor | 1910 |
| 18 | Papuaa Reservoir | Kauai | 48 | High | Poor | 1914 |
| 19 | Kumano Reservoir | Kauai | 48 | High | Poor | 1902 |
| 20 | Ioleau Reservoir | Kauai | 48 | Low | Poor | 1902 |
| 21 | Huinawai Reservoir | Kauai | 47 | High | Poor | 1902 |
| 22 | Pauwela Reservoir | Maui | 47 | High | Poor | 1904 |
| 23 | Maui Reservoir 40 | Maui | 47 | High | Fair | 1926 |
| 24 | Kaloko Reservoir | Kauai | 46 | High | Poor | 1890 |
| 25 | Manuhonuhonu Reservoir | Kauai | 45 | High | Poor | 1954 |
| 26 | Peahi Reservoir | Maui | 45 | High | Poor | 1924 |
| 27 | Haiku Reservoir | Maui | 43 | High | Unsatisfactory | 1904 |
| 28 | Aepoeha Reservoir | Kauai | 42 | High | Fair | 1913 |
| 29 | Maui Reservoir 20 | Maui | 42 | High | Poor | 1913 |
| 30 | Puu Opae Reservoir | Kauai | 41 | Low | Unsatisfactory | 1930 |
| 31 | Halenanahu Reservoir | Kauai | 40 | High | Unsatisfactory | 1920 |
| 32 | Aepoekolu Reservoir | Kauai | 40 | High | Poor | 1910 |
| 33 | Kepani Reservoir | Kauai | 40 | High | Poor | 1954 |
| 34 | Maui Reservoir 24 | Maui | 39 | High | Poor | 1917 |
| 35 | Maui Reservoir 15 | Maui | 39 | High | Poor | 1917 |
| 36 | Punawai Reservoir | Hawaii | 38 | High | Fair | 1970 |
| 37 | Helemano 6 Reservoir | Honolulu | 38 | High | Poor | 1915 |
| 38 | Mau Reservoir | Kauai | 38 | High | Poor | 1901 |
| 39 | Aahoaka Reservoir | Kauai | 38 | High | Poor | 1910 |
| 40 | Upper Field 14 Reservoir | Maui | 38 | High | Poor | 1985 |
| 41 | Elima Reservoir | Kauai | 37 | High | Poor | 1901 |
| 42 | Papaaea Reservoir | Maui | 37 | High | Poor | 1902 |
| 43 | Puu Koa Reservoir | Maui | 37 | High | Poor | 1985 |
| 44 | Hukiwai Reservoir | Kauai | 36 | High | Poor | 1910 |
| 45 | Middle Field 14 Reservoir | Maui | 36 | High | Unsatisfactory | 2006 |
| 46 | Aepoalua Reservoir | Kauai | 35 | High | Poor | 1915 |
| 47 | Maui Reservoir 33 | Maui | 35 | High | Poor | 1910 |
| 48 | Reservoir 140 | Maui | 35 | High | Poor | 1926 |
| 49 | Paauilo Reservoir | Hawaii | 34 | High | Poor | 1975 |
| 50 | Elua Reservoir | Kauai | 34 | High | Poor | 1902 |
| 51 | Wailua Reservoir | Kauai | 34 | High | Fair | 1920 |
| 52 | Puu O Hewa Reservoir | Kauai | 33 | High | Poor | 1915 |
| 53 | Wailuku Water Reservoir 6 | Maui | 33 | High | Fair | 1967 |
| 54 | Keaiwa Reservoir | Hawaii | 32 | Low | Unsatisfactory | 1920 |
| 55 | Pond No. 1 At Kauai Ranch | Kauai | 32 | High | Fair | 2007 |
| 56 | Omao Reservoir | Kauai | 32 | High | Unsatisfactory | 1915 |
| 57 | Plantation Reservoir | Maui | 31 | High | Fair | 1989 |
| 58 | Honokowai Reservoir | Maui | 31 | High | Poor | 1918 |
| 59 | Maui Reservoir 14 | Maui | 31 | High | Unsatisfactory | 1913 |
| 60 | Waikaia Reservoir | Kauai | 30 | High | Poor | 1951 |
| 61 | Hanakaoo Reservoir | Maui | 30 | High | Fair | 1918 |
| 62 | Maui Reservoir 22 | Maui | 30 | High | Fair | 1917 |
| 63 | Okinawa Reservoir | Kauai | 29 | High | Poor | 1920 |
| 64 | Maui Reservoir 84 | Maui | 29 | High | Poor | 1918 |
| 65 | Maui Reservoir 80 | Maui | 29 | High | Fair | 1917 |
| 66 | Waita Reservoir | Kauai | 28 | High | Poor | 1906 |
| 67 | Maui Reservoir 30 | Maui | 28 | High | Poor | 1917 |
| 68 | Maui Reservoir 74 | Maui | 28 | High | Poor | 1916 |
| 69 | Maunaolu Reservoir | Honolulu | 27 | High | Fair | 1966 |
| 70 | Maui Reservoir 42 | Maui | 27 | High | Poor | 1917 |
| 71 | Halaula Reservoir | Kauai | 26 | High | Poor | 1905 |
| 72 | Kaawanui Reservoir | Kauai | 26 | High | Poor | 1950 |
| 73 | Aii Reservoir | Kauai | 26 | High | Poor | 1920 |
| 74 | Kemoo 5 Reservoir | Honolulu | 25 | High | Poor | 1920 |
| 75 | Oahu Reservoir 155 | Honolulu | 25 | High | Poor | 1916 |
| 76 | Mana Reservoir | Kauai | 25 | High | Unsatisfactory | 1905 |
| 77 | Kalihiwai Reservoir | Kauai | 25 | High | Poor | 1920 |
| 78 | Kaili Ili Reservoir | Maui | 25 | High | Fair | 1984 |
| 79 | Maui Field 290 Reservoir | Maui | 25 | High | Poor | 1997 |
| 80 | Maui Reservoir 60 | Maui | 25 | High | Poor | 1917 |
| 81 | Maui Reservoir 73 | Maui | 25 | High | Poor | 1908 |
| 82 | Kapa Reservoir | Kauai | 24 | High | Poor | 1901 |
| 83 | Maui Reservoir 81 | Maui | 24 | High | Poor | 1920 |
| 84 | Maui Reservoir 90 | Maui | 22 | High | Poor | 1917 |
| 85 | Maui Reservoir 21 | Maui | 22 | High | Poor | 1913 |
| 86 | Puu Pulehu Reservoir | Hawaii | 21 | High | Poor | 1910 |
| 87 | Maui Reservoir 61 | Maui | 21 | High | Poor | 1917 |
| 88 | Maui Reservoir 25 | Maui | 20 | High | Poor | 1917 |
| 89 | Mauka Reservoir | Kauai | 19 | High | Poor | 1910 |
| 90 | Pia Mill Reservoir | Kauai | 17 | High | Poor | 1910 |
| 91 | Maui Reservoir 92 | Maui | 16 | High | Poor | 1967 |
| 92 | Maui Reservoir 70 | Maui | 16 | High | Poor | 1917 |
| 93 | Maui Reservoir 52 | Maui | 15 | High | Poor | 1917 |
| 94 | Maui Reservoir 82 | Maui | 13 | Significant | Poor | 1917 |