Great Falls Estate Dam
Maryland — Montgomery County — Cool Spring Branch
Location
| State | Maryland |
| County | Montgomery |
| River | Cool Spring Branch |
| Coordinates | 39.01200, -77.23610 |
Physical Characteristics
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 300 ft |
| NID Storage | 134 acre-ft |
| Max Storage | 134 acre-ft |
| Surface Area | 5 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Not Rated |
| EAP Status | No |
| Last Inspection | October 26, 2016 |
| Inspection Frequency | — |
Dam Information
| Year Completed | 1963 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Potomac Falls Nature Conservancy Assoc |
| Other Name | Sidey Lake |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.