Dunn Ranch
Dunn Ranch is an earth dam located in Riverside County, California, built in 1987. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Dunn Ranch
The primary purpose of Dunn Ranch is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by The Agri-empire Corporation (private). It impounds the Tr Hamilton Cr.
The dam stands 44 feet tall and stretches 425 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 90 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1987, the structure is 39 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 04/24/2025.
At 44 feet, this dam is taller than 90% of dams nationwide.
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Location
| State | California |
| County | Riverside |
| River/Stream | Tr Hamilton Cr |
| Coordinates | 33.56680, -116.61580 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 44 ft |
| Dam Height | 44 ft |
| Dam Length | 425 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Max Storage | 90 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | The Agri-Empire Corporation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/24/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA01302 |
| Federal ID | CA01302 |
| More Info | State Dam Safety Program |