Hertha
Hertha is an earth dam located in Larimer County, Colorado, built in 1958. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Hertha
The primary purpose of Hertha is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Handy Ditch Co. (jeremy Young) (private). It impounds the Dry Creek-tr near Berthoud.
The dam stands 32 feet tall and stretches 3,675 feet across, creates a reservoir covering 116 acres, and has a maximum storage capacity of 2,447 acre-feet. Completed in 1958, the structure is well into its service life at over 50 years 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 07/15/2022.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Colorado |
| County | Larimer |
| Nearest City | Berthoud |
| River/Stream | Dry Creek-tr |
| Coordinates | 40.32063, -105.15962 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 3,675 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 2,447 acre-ft |
| Max Storage | 2,447 acre-ft |
| Normal Storage | 1,703 acre-ft |
| Surface Area | 116 acres |
| Max Discharge | 1,336 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | HANDY DITCH CO. (JEREMY YOUNG) |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/15/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO00164 |
| Federal ID | CO00164 |
| More Info | State Dam Safety Program |