Nehai Tonkayea Lake Dam
Nehai Tonkayea Lake Dam is an earth dam located in Chariton County, Missouri, built in 1970. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Nehai Tonkayea Lake Dam
The primary purpose of Nehai Tonkayea Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nehai Tonkayea Poa (private). It impounds the Tr-mussel Fork near Keytesville.
The dam stands 65 feet tall and stretches 1,700 feet across, creates a reservoir covering 250 acres, has a maximum storage capacity of 9,100 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1970, 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 02/07/2023.
At 65 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | Missouri |
| County | Chariton |
| Nearest City | Keytesville |
| River/Stream | Tr-mussel Fork |
| Coordinates | 39.59041, -92.89192 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 65 ft |
| Dam Height | 65 ft |
| Dam Length | 1,700 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 9,100 acre-ft |
| Max Storage | 9,100 acre-ft |
| Normal Storage | 5,417 acre-ft |
| Surface Area | 250 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 167 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | NEHAI TONKAYEA POA |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/07/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO10627 |
| Federal ID | MO10627 |
| More Info | State Dam Safety Program |