Las Tablas Creek
Las Tablas Creek is an earth dam located in San Luis Obispo County, California, built in 1961. It carries a Low hazard potential classification and has a poor condition assessment.
About Las Tablas Creek
Las Tablas Creek is a dam in San Luis Obispo, California. The dam is owned by Steven Hastings Harcourt Family Trust (private). It impounds the Las Tablas Cr.
The dam stands 40 feet tall and stretches 140 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 180 acre-feet, and collects water from a drainage area of 31 square miles. Completed in 1961, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/21/2025.
At 40 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | California |
| County | San Luis Obispo |
| River/Stream | Las Tablas Cr |
| Coordinates | 35.68760, -120.94150 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 140 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 180 acre-ft |
| Max Storage | 180 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 31 sq mi |
| Max Discharge | 7,897 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Steven Hastings Harcourt Family Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/21/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00724 |
| Federal ID | CA00724 |
| More Info | State Dam Safety Program |