Prince No. 1
Prince No. 1 is an earth dam located in Boulder County, Colorado, built in 1893. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Prince No. 1
The primary purpose of Prince No. 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Boulder County Parks And Open Space (alexander, Ro (local government). It impounds the Boulder Creek-os near Erie.
The dam stands 14 feet tall and stretches 930 feet across, creates a reservoir covering 24 acres, and has a maximum storage capacity of 125 acre-feet. Completed in 1893, 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 02/04/2021.
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Location
| State | Colorado |
| County | Boulder |
| Nearest City | Erie |
| River/Stream | Boulder Creek-os |
| Coordinates | 40.02334, -105.09223 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 930 ft |
| Year Completed | 1893 (133 years old) |
Storage & Hydraulics
| NID Storage | 125 acre-ft |
| Max Storage | 125 acre-ft |
| Normal Storage | 75 acre-ft |
| Surface Area | 24 acres |
| Max Discharge | 105 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | BOULDER COUNTY PARKS AND OPEN SPACE (ALEXANDER, RO |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/04/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO00246 |
| Federal ID | CO00246 |
| More Info | State Dam Safety Program |