Gold Lake #3
Gold Lake #3 is an earth dam located in Boulder County, Colorado, built in 1879. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Gold Lake #3
The primary purpose of Gold Lake #3 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 Left Hand Ditch Company (terry Plummer) (private). It impounds the Bell Gulch near Longmont.
The dam stands 9 feet tall and stretches 168 feet across, creates a reservoir covering 34 acres, and has a maximum storage capacity of 587 acre-feet. Completed in 1879, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/24/2013. That was over 12 years ago.
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Location
| State | Colorado |
| County | Boulder |
| Nearest City | Longmont |
| River/Stream | Bell Gulch |
| Coordinates | 40.08287, -105.44767 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 168 ft |
| Year Completed | 1879 (147 years old) |
Storage & Hydraulics
| NID Storage | 587 acre-ft |
| Max Storage | 587 acre-ft |
| Normal Storage | 435 acre-ft |
| Surface Area | 34 acres |
| Max Discharge | 430 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | LEFT HAND DITCH COMPANY (TERRY PLUMMER) |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/24/2013 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO02838 |
| Federal ID | CO02838 |
| More Info | State Dam Safety Program |