Grayrocks
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Wyoming |
| County | Platte |
| Nearest City | FORT LARAMIE |
| River/Stream | LARAMIE RIVER |
| Coordinates | 42.16681, -104.69250 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 95 ft |
| Dam Height | 95 ft |
| Dam Length | 2,625 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 194,000 acre-ft |
| Max Storage | 194,000 acre-ft |
| Normal Storage | 104,110 acre-ft |
| Surface Area | 3,547 acres |
| Drainage Area | 4,484 sq mi |
| Max Discharge | 112,300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | BASIN ELECTRIC POWER COOPERATIVE |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 10/06/2023 |
| Emergency Action Plan | Yes |