Janes Flat is an earth dam located in Modoc County, California, built in 1918. It carries a Significant hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 785 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Janes Flat
The primary purpose of Janes Flat is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Usda Fs (federal).
The dam stands 22 feet tall and stretches 785 feet across. Completed in 1918, 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. The most recent inspection on record was 09/28/2015. That was over 11 years ago.
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Location
| State | California |
| County | Modoc |
| Coordinates | 41.88333, -120.76667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 785 ft |
| Year Completed | 1918 (108 years old) |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Usda Fs |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 09/28/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CA00464 |
| Federal ID | CA00464 |
| More Info | State Dam Safety Program |