Lawler
Lawler is an earth dam located in Sonoma County, California, built in 1910. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Lawler
The primary purpose of Lawler 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 City Of Petaluma (local government). It impounds the North Creek.
The dam stands 40 feet tall and stretches 1,150 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 227 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1910, the structure is over a century 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 06/04/2025.
At 40 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | California |
| County | Sonoma |
| River/Stream | North Creek |
| Coordinates | 38.29860, -122.57720 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 1,150 ft |
| Year Completed | 1910 (116 years old) |
Storage & Hydraulics
| NID Storage | 227 acre-ft |
| Max Storage | 227 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Petaluma |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/04/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00834 |
| Federal ID | CA00834 |
| More Info | State Dam Safety Program |