Old Hay Ranch Reservoir Dam is an earth dam located in Lander County, Nevada, built in 1940. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 12 ft12 ft tall and 2,200 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Old Hay Ranch Reservoir Dam
The primary purpose of Old Hay Ranch Reservoir Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Usdi Bureau of Land Management (federal). It impounds the Smith Creek-os.
The dam stands 12 feet tall and stretches 2,200 feet across, creates a reservoir covering 52 acres, has a maximum storage capacity of 130 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 11/18/2021.
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Location
| State | Nevada |
| County | Lander |
| Nearest City | None |
| River/Stream | Smith Creek-os |
| Coordinates | 39.33200, -117.56500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 2,200 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 130 acre-ft |
| Max Storage | 130 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 10 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Usdi Bureau of Land Management |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 11/18/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NV10840 |
| Federal ID | NV10840 |
| More Info | State Dam Safety Program |