Pathfinder
NORTH PLATTE RIVER·
Natrona, Wyoming·
Built 1909·
Masonry·
214 ft tall
Physical Details
| Dam Height | 214 ft (taller than 99.6% in WY) |
| Dam Length | 432 ft |
| Dam Type | Masonry |
| Max Storage | 1.0M acre-ft |
| Normal Storage | 1.0M acre-ft |
| Surface Area | 22,014 acres |
| Drainage Area | 14,600 sq mi |
| Max Discharge | 50,310 cfs |
| Year Completed | 1909 (117 years old) |
| NID ID | WY01296 |
Safety Information
High Hazard
Loss of human life is likely if the dam fails
Emergency Action Plan: Yes
Last Inspection: June 25, 2020
State Regulated: Yes
Regulatory Agency: SEO
Ownership
RECLAMATION
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Pathfinder?
Pathfinder is classified as High Hazard. Loss of human life is likely if the dam fails.
Who owns Pathfinder?
Pathfinder is owned by RECLAMATION (Federal Government).
When was Pathfinder last inspected?
Pathfinder was last inspected on June 25, 2020.
When was Pathfinder built?
Pathfinder was completed in 1909, making it 117 years old.
Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.