Mason Valley Refuge North Pond Dam is an earth dam located in Lyon County, Nevada, built in 1997. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 16 ft16 ft tall and 2,723 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 Mason Valley Refuge North Pond Dam
The primary purpose of Mason Valley Refuge North Pond Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Nevada Department of Wildlife (state). It impounds the Walker River-tr.
The dam stands 16 feet tall and stretches 2,723 feet across, creates a reservoir covering 180 acres, has a maximum storage capacity of 465 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1997, the structure is 29 years old.
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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 04/20/2023.
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Location
| State | Nevada |
| County | Lyon |
| Nearest City | None |
| River/Stream | Walker River-tr |
| Coordinates | 39.11970, -119.09970 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 2,723 ft |
| Year Completed | 1997 (29 years old) |
Storage & Hydraulics
| NID Storage | 465 acre-ft |
| Max Storage | 465 acre-ft |
| Normal Storage | 400 acre-ft |
| Surface Area | 180 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 250 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Nevada Department of Wildlife |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/20/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NV10314 |
| Federal ID | NV10314 |
| More Info | State Dam Safety Program |