Spaulding is an earth dam located in Lassen County, California, built in 1954. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 930 ft long, taller than 62% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Spaulding
The primary purpose of Spaulding 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 R.c. Roberts Ranches, LLC (private). It impounds the Tr Madelin Plains.
The dam stands 28 feet tall and stretches 930 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 147 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1954, 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 08/26/2025.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | California |
| County | Lassen |
| River/Stream | Tr Madelin Plains |
| Coordinates | 40.92430, -120.27780 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 930 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 147 acre-ft |
| Max Storage | 147 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 7 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | R.c. Roberts Ranches, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/26/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00952 |
| Federal ID | CA00952 |
| More Info | State Dam Safety Program |