James Montgomery
James Montgomery is an earth dam located in Shasta County, California, built in 1869. It carries a Significant hazard potential classification and has a poor condition assessment.
About James Montgomery
The primary purpose of James Montgomery is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Thomas And Natalie Edholm (private). It impounds the Flat Creek.
The dam stands 24 feet tall and stretches 240 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 65 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1869, the structure is one of the older dams in the region, with over a century and a half of service.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/22/2025.
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Location
| State | California |
| County | Shasta |
| River/Stream | Flat Creek |
| Coordinates | 40.51870, -122.47580 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 240 ft |
| Year Completed | 1869 (157 years old) |
Storage & Hydraulics
| NID Storage | 65 acre-ft |
| Max Storage | 65 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Thomas and Natalie Edholm |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/22/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00932 |
| Federal ID | CA00932 |
| More Info | State Dam Safety Program |