Arizona Dams
376 dams tracked by the National Inventory of Dams
Total Dams
376
High Hazard
159
42.3%
Poor / Unsatisfactory
44
Average Age
71 yrs
Hazard Classification
High159 (42.3%)
Significant38 (10.1%)
Low172 (45.7%)
Condition Assessment
Satisfactory97 (25.8%)
Fair49 (13.0%)
Poor / Unsatisfactory44 (11.7%)
Not Rated186 (49.5%)
Federal
112
State
36
Local
83
Private
127
Tallest Dams
- Glen Canyon Dam710 ft
- New Waddell Dam440 ft
- 1 West400 ft
- Theodore Roosevelt Dam357 ft
- Sierrita350 ft
High Hazard Dams
- Glen Canyon DamHigh
- New Waddell DamHigh
- Theodore Roosevelt DamHigh
- SierritaHigh
- Parker DamHigh
Poor Condition Dams
- ElgoPoor
- JaquesPoor
- Fool HollowPoor
- Black CanyonPoor
- Walnut CanyonPoor
All Dams in Arizona
Showing 226–250 of 376
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Howard Graham County | 49 | 1975 | High | Fair |
| Horsethief Yavapai County | 38 | 1934 | High | Not Rated |
| Horseshoe Dam Maricopa County | 202 | 1946 | High | Not Available |
| Horseshoe Cienega Dike Apache County | 15 | 1964 | High | Fair |
| Horse Mesa Dam Maricopa County | 305 | 1927 | High | Not Available |
| Hole-N-Wall Detention Dam Mohave County | 32 | 1960 | Low | Fair |
| Hog Wallow Apache County | 7 | 1908 | Low | Not Rated |
| Hesperus Wash (No. 36) Maricopa County | 49 | 1973 | High | Satisfactory |
| Headgate Rock La Paz County | 70 | 1941 | High | Satisfactory |
| Haumont Tank Apache County | 28 | — | Low | Not Rated |
| Hassayampa Check Yavapai County | 40 | 1936 | Low | Not Rated |
| Harquahala FRS Maricopa County | 49 | 1982 | High | Satisfactory |
| Haralson Graham County | 44 | 1919 | High | Satisfactory |
| Halfway Detention Dam Graham County | 18 | 1940 | Low | Fair |
| Guadalupe Maricopa County | 37 | 1975 | High | Satisfactory |
| Green Valley Wwtp Pima County | 12 | 1981 | Low | Not Rated |
| Green Valley Park Gila County | 13 | 1996 | High | Satisfactory |
| Grayhorse Detention Dam Greenlee County | 28 | 1956 | Low | Fair |
| Graveyard Wash Graham County | 35 | 1962 | High | Fair |
| Grant Morris Graham County | 49 | 1975 | High | Satisfactory |
| Granite Reef Diversion Dam Maricopa County | 29 | 1908 | Low | Not Available |
| Granite Creek Yavapai County | 98 | 1920 | High | Satisfactory |
| Granite Basin Yavapai County | 27 | 1939 | High | Not Rated |
| Gold Gulch #2 Gila County | 116 | 1982 | Significant | Satisfactory |
| Gold Gulch 1a Gila County | 106 | 1995 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.