Greybull Valley (1st Enl.)
RED CLAY DRAW·
Park, Wyoming·
Built 2000·
Earth·
157 ft tall
Physical Details
| Dam Height | 157 ft (taller than 99.3% in WY) |
| Dam Length | 1,798 ft |
| Dam Type | Earth |
| Max Storage | 53.2K acre-ft |
| Normal Storage | 33.2K acre-ft |
| Surface Area | 691 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 5,750 cfs |
| Year Completed | 2000 (26 years old) |
| Year Modified | 2009 |
| NID ID | WY02234 |
Safety Information
High Hazard
Loss of human life is likely if the dam fails
Emergency Action Plan: Yes
Last Inspection: August 14, 2019
State Regulated: Yes
Regulatory Agency: SEO
Ownership
GREYBULL VALLEY IRRIGATION DISTRICT
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Greybull Valley (1st Enl.)?
Greybull Valley (1st Enl.) is classified as High Hazard. Loss of human life is likely if the dam fails.
Who owns Greybull Valley (1st Enl.)?
Greybull Valley (1st Enl.) is owned by GREYBULL VALLEY IRRIGATION DISTRICT (Private).
When was Greybull Valley (1st Enl.) last inspected?
Greybull Valley (1st Enl.) was last inspected on August 14, 2019.
When was Greybull Valley (1st Enl.) built?
Greybull Valley (1st Enl.) was completed in 2000, making it 26 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.