Steamboat Lake
Steamboat Lake is an earth dam located in Siskiyou County, California, built in 1968. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Steamboat Lake
The primary purpose of Steamboat Lake 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 California Department Of Fish And Wildlife (state). It impounds the Tr Lit Shasta R.
The dam stands 22 feet tall and stretches 655 feet across, creates a reservoir covering 304 acres, has a maximum storage capacity of 2,700 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1968, 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 04/08/2025.
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Location
| State | California |
| County | Siskiyou |
| River/Stream | Tr Lit Shasta R |
| Coordinates | 41.69100, -122.46960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 655 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 2,700 acre-ft |
| Max Storage | 2,700 acre-ft |
| Surface Area | 304 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | California Department of Fish and Wildlife |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/08/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00499 |
| Federal ID | CA00499 |
| More Info | State Dam Safety Program |