Union #2 is an earth dam located in Jefferson County, Colorado, built in 1982. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 17 ft17 ft tall and 930 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 Union #2
The primary purpose of Union #2 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Lakewood - Parks Dept. (dzialo, John) (local government). It impounds the Weir Gulch-os near Lakewood.
The dam stands 17 feet tall and stretches 930 feet across, creates a reservoir covering 15 acres, and has a maximum storage capacity of 250 acre-feet. Completed in 1982, the structure is 44 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 03/17/1994. That was over 32 years ago.
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Location
| State | Colorado |
| County | Jefferson |
| Nearest City | Lakewood |
| River/Stream | Weir Gulch-os |
| Coordinates | 39.70306, -105.08751 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 930 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 250 acre-ft |
| Max Storage | 250 acre-ft |
| Normal Storage | 55 acre-ft |
| Surface Area | 15 acres |
| Max Discharge | 2,750 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Lakewood - Parks Dept. (dzialo, John) |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 03/17/1994 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO02397 |
| Federal ID | CO02397 |
| More Info | State Dam Safety Program |