Johnson Lake Dam
Johnson Lake Dam is an earth dam located in Cass County, Missouri, built in 1976. It carries a Low hazard potential classification.
About Johnson Lake Dam
The primary purpose of Johnson Lake Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Roy Johnson (private). It impounds the Tr-lumpkins Fork near Grandview.
The dam stands 30 feet tall, creates a reservoir covering 11 acres, has a maximum storage capacity of 177 acre-feet, and collects water from a drainage area of 140 square miles. Completed in 1976, the structure is 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.
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Location
| State | Missouri |
| County | Cass |
| Nearest City | Grandview |
| River/Stream | Tr-lumpkins Fork |
| Coordinates | 38.82114, -94.46748 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 177 acre-ft |
| Max Storage | 177 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 140 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | ROY JOHNSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO20408 |
| Federal ID | MO20408 |
| More Info | State Dam Safety Program |