Quinn No. 1
Quinn No. 1 is an earth dam located in Niobrara County, Wyoming, built in 1959. It carries a Significant hazard potential classification and has a fair condition assessment.
About Quinn No. 1
The primary purpose of Quinn No. 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ronald P. Smith (private). It impounds the Quinn Creek near Lusk.
The dam stands 30 feet tall and stretches 533 feet across, creates a reservoir covering 16 acres, and has a maximum storage capacity of 238 acre-feet. Completed in 1959, the structure is well into its service life at over 50 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. The most recent inspection on record was 06/19/2024.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Lusk |
| River/Stream | Quinn Creek |
| Coordinates | 42.76740, -104.51170 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 533 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 238 acre-ft |
| Max Storage | 238 acre-ft |
| Normal Storage | 143 acre-ft |
| Surface Area | 16 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | RONALD P. SMITH |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/19/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00310 |
| Federal ID | WY00310 |
| More Info | State Dam Safety Program |