Lake Welch Dam
High HazardPoor ConditionEmergency Action Plan: Yes
Location
| County | Rockland |
| Nearest City | Willow Grove |
| River/Stream | MINISCEONGO CREEK |
| Coordinates | 41.22948, -74.07161 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 788 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 4,750 acre-ft |
| Max Storage | 4,750 acre-ft |
| Normal Storage | 3,072 acre-ft |
| Surface Area | 182 acres |
| Drainage Area | 2 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | NYSOPRHP - PALISADES INTERSTATE PARK COMMISSION |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 05/07/2025 |
| Emergency Action Plan | Yes |