Johnson Lake Dam is an earth dam located in Montgomery County, Missouri. It carries a Low hazard potential classification.
Dam profile
NID height · 40 ft40 ft tall and 800 ft long, taller than 86% of U.S. dams with a recorded height. 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 Johnson Lake Dam
The primary purpose of Johnson Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Roger Johnson (private). It impounds the Tr-calhoun Hollow-clear Creek near New Florence.
The dam stands 40 feet tall and stretches 800 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 147 acre-feet, and collects water from a drainage area of 0 square miles.
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. The most recent inspection on record was 02/01/2022.
At 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Missouri |
| County | Montgomery |
| Nearest City | New Florence |
| River/Stream | Tr-calhoun Hollow-clear Creek |
| Coordinates | 38.88312, -91.46927 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 800 ft |
Storage & Hydraulics
| NID Storage | 147 acre-ft |
| Max Storage | 147 acre-ft |
| Normal Storage | 147 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Roger Johnson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 02/01/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO11473 |
| Federal ID | MO11473 |
| More Info | State Dam Safety Program |