Tallac
Tallac is a gravity dam located in El Dorado County, California, built in 1970. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Tallac
Tallac is a dam in El Dorado, California. The dam is owned by Tahoe Keys Property Owners Association (private). It impounds the Unnamed Tributary.
The dam stands 16 feet tall and stretches 85 feet across, creates a reservoir covering 267 acres, has a maximum storage capacity of 1,399 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1970, the structure is well into its service life at over 50 years old.
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 10/17/2025.
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Location
| State | California |
| County | El Dorado |
| River/Stream | Unnamed Tributary |
| Coordinates | 38.92818, -120.01116 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 85 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 1,399 acre-ft |
| Max Storage | 1,399 acre-ft |
| Surface Area | 267 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,183 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Tahoe Keys Property Owners Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/17/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA10376 |
| Federal ID | CA10376 |
| More Info | State Dam Safety Program |