Gregory Lake is an earth dam located in Municipality of Anchorage, Alaska. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 1,848 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Gregory Lake
The primary purpose of Gregory Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Usaf Pacaf (federal). It impounds the Six Mile Creek near Elmendorf Afb.
The dam stands 16 feet tall and stretches 1,848 feet across, creates a reservoir covering 745 acres, has a maximum storage capacity of 375 acre-feet, and collects water from a drainage area of 6 square miles.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 10/07/2022.
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Location
| State | Alaska |
| County | Municipality of Anchorage |
| Nearest City | Elmendorf Afb |
| River/Stream | Six Mile Creek |
| Coordinates | 61.28833, -149.80833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 1,848 ft |
Storage & Hydraulics
| NID Storage | 375 acre-ft |
| Max Storage | 375 acre-ft |
| Normal Storage | 350 acre-ft |
| Surface Area | 745 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Usaf Pacaf |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/07/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AK00036 |
| Federal ID | AK00036 |
| More Info | State Dam Safety Program |