Goodhue No. 1
Goodhue No. 1 is an earth dam located in Boulder County, Colorado, built in 1938. It carries a Low hazard potential classification and has a fair condition assessment.
About Goodhue No. 1
The primary purpose of Goodhue 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 Rock Creek-tr near Lafayette.
The dam stands 18 feet tall and stretches 1,950 feet across, creates a reservoir covering 29 acres, has a maximum storage capacity of 320 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1938, the structure is well-established, with more than 75 years of service.
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 12/03/2021.
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Location
| State | Colorado |
| County | Boulder |
| Nearest City | Lafayette |
| River/Stream | Rock Creek-tr |
| Coordinates | 39.94834, -105.10390 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 14 ft |
| Dam Length | 1,950 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 320 acre-ft |
| Max Storage | 320 acre-ft |
| Normal Storage | 175 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 875 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | BOULDER COUNTY PARKS AND OPEN SPACE (ALEXANDER, RO |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 12/03/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00222 |
| Federal ID | CO00222 |
| More Info | State Dam Safety Program |