Pond K
Pond K is an earth dam located in Amador County, California, built in 2006. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Pond K
The primary purpose of Pond K is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Us Mine Corporation (private). It impounds the Offstream.
The dam stands 22 feet tall and stretches 1,250 feet across, creates a reservoir covering 69 acres, has a maximum storage capacity of 1,056 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2006, the structure is relatively new.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 03/21/2025.
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Location
| State | California |
| County | Amador |
| River/Stream | Offstream |
| Coordinates | 38.33700, -120.95880 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,250 ft |
| Year Completed | 2006 (20 years old) |
Storage & Hydraulics
| NID Storage | 1,056 acre-ft |
| Max Storage | 1,056 acre-ft |
| Surface Area | 69 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Tailings |
| Owner | US Mine Corporation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/21/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA01505 |
| Federal ID | CA01505 |
| More Info | State Dam Safety Program |