Lake Mary is an earth dam located in Adams County, Colorado, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 620 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 Lake Mary
The primary purpose of Lake Mary is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by U.s. Fish & Wildlife Service (federal). It impounds the South Platte River-os near Commerce City.
The dam stands 11 feet tall and stretches 620 feet across, creates a reservoir covering 9 acres, and has a maximum storage capacity of 90 acre-feet. Completed in 1960, the structure is well into its service life at over 50 years old.
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.
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Location
| State | Colorado |
| County | Adams |
| Nearest City | Commerce City |
| River/Stream | South Platte River-os |
| Coordinates | 39.81838, -104.86494 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 620 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Max Storage | 90 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 9 acres |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | U.s. Fish & Wildlife Service |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO08230 |
| Federal ID | CO08230 |
| More Info | State Dam Safety Program |