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 326–350 of 376
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Stoneridge (No. 19) Maricopa County | 38 | 1973 | High | Satisfactory |
| Sunnycove Maricopa County | 51 | 1975 | High | Satisfactory |
| Sunnyside Apache County | 13 | 1912 | Low | Not Rated |
| Sunridge Canyon (No. 7) Maricopa County | 56 | 1972 | High | Satisfactory |
| Sunrise Apache County | 58 | 1967 | High | Poor |
| Sunset Maricopa County | 32 | 1977 | High | Satisfactory |
| Swale Tank Dam Mohave County | 27 | — | Low | Not Rated |
| Sweetwood (K4) Coconino County | 18 | — | Low | Not Rated |
| Sycamore Dam Pima County | 47 | 1939 | Significant | Not Rated |
| Tat Momolikot -Village Dike Pinal County | 8 | 1974 | Undetermined | Not Rated |
| Taylor Wwtp (Basins 1 & 2) Navajo County | 10 | — | Low | Not Rated |
| The Lake Pima County | 31 | — | Low | Not Rated |
| Theodore Roosevelt Dam Maricopa County | 357 | 1911 | High | Not Available |
| Thunderbird Park Reservoir Maricopa County | 44 | 1985 | High | Satisfactory |
| Tom Tank Coconino County | 14 | — | Low | Not Rated |
| Tonto Dam Apache County | 40 | 1964 | Low | Not Rated |
| Town of Eagar Wwtp Apache County | 7 | 1983 | Low | Not Rated |
| Tremaine Reservoir Coconino County | 30 | 1952 | Low | Fair |
| Trophy Lake Navajo County | 33 | 1975 | Significant | Satisfactory |
| Trout Lake Apache County | 33 | — | Undetermined | Not Available |
| Tsaile Apache County | 65 | 1964 | High | Satisfactory |
| Tufa Stone Gila County | 39 | 1944 | High | Unsatisfactory |
| Twin Tanks Pima County | 24 | — | Low | Not Rated |
| Tyler Reservoir Apache County | 9 | 1929 | Low | Not Rated |
| Udall Apache County | 24 | 1910 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.