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 assessed
3	H-v Reservoir	Apache	1883	143 yrs	15	Low	Not assessed
4	Jarvis	Apache	1886	140 yrs	7	Low	Not assessed
5	Canyon	Apache	1886	140 yrs	26	Low	Not assessed
6	Picacho Dam	Pinal	1889	137 yrs	33	Low	Not assessed
7	Nelson	Apache	1890	136 yrs	34	Low	Not assessed
8	Santa Fe	Coconino	1892	134 yrs	42	High	Satisfactory
9	Rogers Reservoir	Graham	1894	132 yrs	24	Low	Not assessed
10	Oneal Lake	Yavapai	1894	132 yrs	10	Low	Not assessed
11	River Reservoir #3	Apache	1896	130 yrs	58	High	Satisfactory
12	Steel Dam	Coconino	1898	128 yrs	46	Low	Not assessed
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 assessed
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 assessed
19	Mclellan	Coconino	1907	119 yrs	33	Low	Not assessed
20	Lower Lake Mary	Coconino	1907	119 yrs	33	High	Not assessed
21	Colter	Apache	1908	118 yrs	19	High	Poor
22	Mexican Hay Lake	Apache	1908	118 yrs	11	Low	Not assessed
23	Hog Wallow	Apache	1908	118 yrs	7	Low	Not assessed
24	Pool Corral	Apache	1908	118 yrs	12	Low	Not assessed
25	Granite Reef Diversion Dam	Maricopa	1908	118 yrs	29	Low	Not assessed
26	28 Tank	Yavapai	1909	117 yrs	33	Low	Not assessed
27	Laguna Diversion Dam	Yuma	1909	117 yrs	43	Low	Not assessed
28	Rogers	Apache	1910	116 yrs	12	Low	Not assessed
29	Udall	Apache	1910	116 yrs	24	Low	Not assessed
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 assessed
34	Lyman Dam	Apache	1912	114 yrs	60	High	Fair
35	Sunnyside	Apache	1912	114 yrs	13	Low	Not assessed
36	Woodland	Navajo	1914	112 yrs	18	High	Fair
37	J. D. Dam	Coconino	1915	111 yrs	21	Low	Not assessed
38	Canyon Mouth	Yavapai	1916	110 yrs	34	Low	Not assessed
39	Mallory Tank	Apache	1918	108 yrs	13	Low	Not assessed
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 assessed
44	Granite Creek	Yavapai	1920	106 yrs	98	High	Satisfactory
45	Little Reservoir	Apache	1921	105 yrs	18	Low	Not assessed
46	Gillespie	Maricopa	1921	105 yrs	66	Significant	Fair
47	Soldier Lake Dam	Pima	1922	104 yrs	23	Significant	Not assessed
48	Cave Creek	Maricopa	1923	103 yrs	120	Low	Not assessed
49	Lower Goldwater	Yavapai	1923	103 yrs	73	High	Satisfactory
50	St. Marys	Apache	1925	101 yrs	7	Low	Not assessed

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