Mountain Valley Park Dam
Significant HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | New Jersey |
| County | Morris |
| Nearest City | Mendham Township |
| River/Stream | North Branch Raritan River |
| Coordinates | 40.78578, -74.60785 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 160 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 20 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 500 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Borough of Mendham |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/12/2025 |
| Emergency Action Plan | Yes |