Blackjack Dam
Blackjack Dam is an earth dam located in White Pine County, Nevada, built in 1932. It carries a Significant hazard potential classification and has a poor condition assessment.
About Blackjack Dam
The primary purpose of Blackjack Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Preston Irrigation Company (private). It impounds the White River-tr near Preston.
The dam stands 10 feet tall and stretches 550 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 35 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1932, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 04/28/2021.
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Location
| State | Nevada |
| County | White Pine |
| Nearest City | Preston |
| River/Stream | White River-tr |
| Coordinates | 38.95694, -115.09444 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 550 ft |
| Year Completed | 1932 (94 years old) |
Storage & Hydraulics
| NID Storage | 35 acre-ft |
| Max Storage | 35 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 200 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | PRESTON IRRIGATION COMPANY |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/28/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NV10553 |
| Federal ID | NV10553 |
| More Info | State Dam Safety Program |