Tunnel Dam is a gravity dam located in Camden County, Missouri, built in 1930. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 24 ft24 ft tall and 878 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Tunnel Dam
The primary purpose of Tunnel Dam is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Sho-me Power Corporation (public utility). It impounds the Niangua River near N/a.
The dam stands 24 feet tall and stretches 878 feet across, creates a reservoir covering 360 acres, has a maximum storage capacity of 2,650 acre-feet, and collects water from a drainage area of 627 square miles. Completed in 1930, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 06/15/2022.
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Location
| State | Missouri |
| County | Camden |
| Nearest City | N/a |
| River/Stream | Niangua River |
| Coordinates | 37.93830, -92.85170 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 878 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 2,650 acre-ft |
| Max Storage | 2,650 acre-ft |
| Normal Storage | 1,540 acre-ft |
| Surface Area | 360 acres |
| Drainage Area | 627 sq mi |
| Max Discharge | 62,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Sho-me Power Corporation |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/15/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO30205 |
| Federal ID | MO30205 |
| More Info | State Dam Safety Program |