Upper Long Lake
Colorado — Jefferson County — RALSTON CREEK-OS
Location
| State | Colorado |
| County | Jefferson |
| River | RALSTON CREEK-OS |
| Coordinates | 39.82285, -105.23565 |
Physical Characteristics
| NID Height | 46 ft |
| Dam Height | 46 ft |
| Dam Length | 1,500 ft |
| NID Storage | 1,770 acre-ft |
| Max Storage | 1,770 acre-ft |
| Surface Area | 60 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Unsatisfactory |
| EAP Status | Yes |
| Last Inspection | June 8, 2022 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1939 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Public Utility |
| Owner | DENVER BOARD OF WATER COMMISSIONERS |
| Other Name | Long Lake No 1, Campbell #1, Cambell Res |
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.