New Hogan Dam
New Hogan Dam is a rockfill dam located in Calaveras County, California, built in 1963. It carries a High hazard potential classification.
About New Hogan Dam
The primary purpose of New Hogan Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Usace - Sacramento District (federal). It impounds the Calaveras River near Jenny Lind.
The dam stands 210 feet tall and stretches 1,960 feet across, creates a reservoir covering 4,400 acres, has a maximum storage capacity of 348,598 acre-feet, and collects water from a drainage area of 363 square miles. Completed in 1963, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 08/09/2021.
At 210 feet, this dam is taller than 99% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The California dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | California |
| County | Calaveras |
| Nearest City | Jenny Lind |
| River/Stream | Calaveras River |
| Coordinates | 38.15104, -120.81370 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 210 ft |
| Dam Height | 155 ft |
| Dam Length | 1,960 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 348,598 acre-ft |
| Max Storage | 348,598 acre-ft |
| Normal Storage | 217,410 acre-ft |
| Surface Area | 4,400 acres |
| Drainage Area | 363 sq mi |
| Max Discharge | 106,400 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - Sacramento District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 08/09/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA10109 |
| Federal ID | CA10109 |
| More Info | State Dam Safety Program |