Oldest Dams in Arizona
Arizona has 323 dams with recorded construction dates. The oldest dates to 1881 — 145 years ago. Arizona's earliest dams were built in the 19th century, an era of westward expansion, irrigation development, and early water infrastructure. Older dams require particular attention for safety, as many were built before modern engineering standards.
| # | Dam | County | Year Built | Age | Height (ft) | Hazard | Condition |
|---|---|---|---|---|---|---|---|
| 1 | Walnut Canyon | Coconino | 1881 | 145 yrs | 70 | High | Poor |
| 2 | Big Supai Tank | Coconino | 1882 | 144 yrs | 34 | Low | Not Rated |
| 3 | H-v Reservoir | Apache | 1883 | 143 yrs | 15 | Low | Not Rated |
| 4 | Jarvis | Apache | 1886 | 140 yrs | 7 | Low | Not Rated |
| 5 | Canyon | Apache | 1886 | 140 yrs | 26 | Low | Not Rated |
| 6 | Picacho Dam | Pinal | 1889 | 137 yrs | 33 | Low | Not Available |
| 7 | Nelson | Apache | 1890 | 136 yrs | 34 | Low | Not Rated |
| 8 | Santa Fe | Coconino | 1892 | 134 yrs | 42 | High | Satisfactory |
| 9 | Rogers Reservoir | Graham | 1894 | 132 yrs | 24 | Low | Not Rated |
| 10 | Oneal Lake | Yavapai | 1894 | 132 yrs | 10 | Low | Not Rated |
| 11 | River Reservoir #3 | Apache | 1896 | 130 yrs | 58 | High | Satisfactory |
| 12 | Steel Dam | Coconino | 1898 | 128 yrs | 46 | Low | Not Rated |
| 13 | Lee Valley | Apache | 1899 | 127 yrs | 24 | Significant | Satisfactory |
| 14 | Round Rock | Apache | 1900 | 126 yrs | 46 | High | Satisfactory |
| 15 | Railroad Tank Dam | Coconino | 1900 | 126 yrs | 37 | High | Not Rated |
| 16 | City | Coconino | 1902 | 124 yrs | 47 | High | Satisfactory |
| 17 | Lakeside | Navajo | 1904 | 122 yrs | 21 | Significant | Fair |
| 18 | Foxboro Lake Dam | Coconino | 1905 | 121 yrs | 13 | Low | Not Rated |
| 19 | Mclellan | Coconino | 1907 | 119 yrs | 33 | Low | Not Rated |
| 20 | Lower Lake Mary | Coconino | 1907 | 119 yrs | 33 | High | Not Rated |
| 21 | Colter | Apache | 1908 | 118 yrs | 19 | High | Poor |
| 22 | Mexican Hay Lake | Apache | 1908 | 118 yrs | 11 | Low | Not Rated |
| 23 | Hog Wallow | Apache | 1908 | 118 yrs | 7 | Low | Not Rated |
| 24 | Pool Corral | Apache | 1908 | 118 yrs | 12 | Low | Not Rated |
| 25 | Granite Reef Diversion Dam | Maricopa | 1908 | 118 yrs | 29 | Low | Not Available |
| 26 | 28 Tank | Yavapai | 1909 | 117 yrs | 33 | Low | Not Rated |
| 27 | Laguna Diversion Dam | Yuma | 1909 | 117 yrs | 43 | Low | Not Available |
| 28 | Rogers | Apache | 1910 | 116 yrs | 12 | Low | Not Rated |
| 29 | Udall | Apache | 1910 | 116 yrs | 24 | Low | Not Rated |
| 30 | Lebanon Reservoir #1 (upper) | Graham | 1910 | 116 yrs | 45 | Significant | Fair |
| 31 | Luna | Apache | 1911 | 115 yrs | 27 | Significant | Satisfactory |
| 32 | Masonry #2 | Coconino | 1911 | 115 yrs | 51 | High | Satisfactory |
| 33 | Theodore Roosevelt Dam | Maricopa | 1911 | 115 yrs | 357 | High | Not Available |
| 34 | Lyman Dam | Apache | 1912 | 114 yrs | 60 | High | Fair |
| 35 | Sunnyside | Apache | 1912 | 114 yrs | 13 | Low | Not Rated |
| 36 | Woodland | Navajo | 1914 | 112 yrs | 18 | High | Fair |
| 37 | J. D. Dam | Coconino | 1915 | 111 yrs | 21 | Low | Not Rated |
| 38 | Canyon Mouth | Yavapai | 1916 | 110 yrs | 34 | Low | Not Rated |
| 39 | Mallory Tank | Apache | 1918 | 108 yrs | 13 | Low | Not Rated |
| 40 | Ganado | Apache | 1919 | 107 yrs | 40 | High | Satisfactory |
| 41 | Haralson | Graham | 1919 | 107 yrs | 44 | High | Satisfactory |
| 42 | Daggs | Navajo | 1919 | 107 yrs | 57 | High | Fair |
| 43 | Atchison | Apache | 1920 | 106 yrs | 8 | Low | Not Rated |
| 44 | Granite Creek | Yavapai | 1920 | 106 yrs | 98 | High | Satisfactory |
| 45 | Little Reservoir | Apache | 1921 | 105 yrs | 18 | Low | Not Rated |
| 46 | Gillespie | Maricopa | 1921 | 105 yrs | 66 | Significant | Fair |
| 47 | Soldier Lake Dam | Pima | 1922 | 104 yrs | 23 | Significant | Not Rated |
| 48 | Cave Creek | Maricopa | 1923 | 103 yrs | 120 | Low | Not Rated |
| 49 | Lower Goldwater | Yavapai | 1923 | 103 yrs | 73 | High | Satisfactory |
| 50 | St. Marys | Apache | 1925 | 101 yrs | 7 | Low | Not Rated |