Donath Lake
Donath Lake is an earth dam located in Larimer County, Colorado, built in 1883. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Donath Lake
The primary purpose of Donath Lake is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Louden Irrigating Canal And Reservoir Company (lea (private). It impounds the Big Thompson River-os near Loveland.
The dam stands 26 feet tall and stretches 2,000 feet across, creates a reservoir covering 85 acres, and has a maximum storage capacity of 1,148 acre-feet. Completed in 1883, 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 07/23/2021.
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Location
| State | Colorado |
| County | Larimer |
| Nearest City | Loveland |
| River/Stream | Big Thompson River-os |
| Coordinates | 40.46515, -105.05360 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 2,000 ft |
| Year Completed | 1883 (143 years old) |
Storage & Hydraulics
| NID Storage | 1,148 acre-ft |
| Max Storage | 1,148 acre-ft |
| Normal Storage | 1,148 acre-ft |
| Surface Area | 85 acres |
| Max Discharge | 380 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | LOUDEN IRRIGATING CANAL AND RESERVOIR COMPANY (LEA |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/23/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO01768 |
| Federal ID | CO01768 |
| More Info | State Dam Safety Program |