Milton South is an arch dam located in Nevada County, California, built in 1927. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 137 ft long, taller than 68% 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 arch section and the water level is illustrative.
About Milton South
The primary purpose of Milton South 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 Nevada Irrigation District (public utility). It impounds the Middle Yuba River near Oregon Creek Cg.
The dam stands 30 feet tall and stretches 137 feet across, creates a reservoir covering 810 acres, has a maximum storage capacity of 295 acre-feet, and collects water from a drainage area of 39 square miles. Completed in 1927, the structure is well-established, with more than 75 years of service.
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 08/23/2022.
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Location
| State | California |
| County | Nevada |
| Nearest City | Oregon Creek Cg |
| River/Stream | Middle Yuba River |
| Coordinates | 39.52140, -120.58230 |
Physical Characteristics
| Dam Type | Arch |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 137 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 295 acre-ft |
| Max Storage | 295 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 810 acres |
| Drainage Area | 39 sq mi |
| Max Discharge | 10,000 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Nevada Irrigation District |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/23/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CA00248 |
| Federal ID | CA00248S001 |
| More Info | State Dam Safety Program |