Mcninch No. 1
Low HazardPoor ConditionEmergency Action Plan: Not Required
Location
| State | Wyoming |
| County | Sublette |
| Nearest City | BIG PINEY |
| River/Stream | BEAVER CREEK OFFSTREAM |
| Coordinates | 42.59900, -110.25190 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 1,150 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 1,620 acre-ft |
| Max Storage | 1,620 acre-ft |
| Normal Storage | 1,086 acre-ft |
| Surface Area | 107 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 21 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | TF LAND & CATTLE LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/06/2025 |
| Emergency Action Plan | Not Required |