James Dam 407 is an earth dam located in Franklin County, Nebraska, built in 1935. It carries a Significant hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 293 ft long. 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 James Dam 407
The primary purpose of James Dam 407 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Benjamin B. Ag Inc (private). It impounds the Vining Creek near Riverton.
The dam stands 23 feet tall and stretches 293 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 75 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1935, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 05/24/2023.
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Location
| State | Nebraska |
| County | Franklin |
| Nearest City | Riverton |
| River/Stream | Vining Creek |
| Coordinates | 40.11139, -99.01341 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 19 ft |
| Dam Length | 293 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 832 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Benjamin B. Ag Inc |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/24/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00407 |
| Federal ID | NE00407 |
| More Info | State Dam Safety Program |