Mcmahon
Low HazardSatisfactory ConditionEmergency Action Plan: No
Location
| County | Mariposa |
| River/Stream | Maxwell Creek |
| Coordinates | 37.69916, -120.19824 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 52 ft |
| Dam Height | 52 ft |
| Dam Length | 705 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 520 acre-ft |
| Max Storage | 520 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 18 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Kym Carpenter |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/28/2025 |
| Emergency Action Plan | No |