John David Johnson Dam
John David Johnson Dam is an earth dam located in Mercer County, Missouri, built in 2002. It carries a Low hazard potential classification.
About John David Johnson Dam
The primary purpose of John David Johnson Dam is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by John David Johnson (private). It impounds the Tr-muddy near Trenton.
The dam stands 30 feet tall and stretches 368 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 26 acre-feet, and collects water from a drainage area of 25 square miles. Completed in 2002, the structure is relatively new.
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 11/12/2002. That was over 23 years ago.
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Location
| State | Missouri |
| County | Mercer |
| Nearest City | Trenton |
| River/Stream | Tr-muddy |
| Coordinates | 40.37551, -93.51270 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 29 ft |
| Dam Length | 368 ft |
| Year Completed | 2002 (24 years old) |
Storage & Hydraulics
| NID Storage | 26 acre-ft |
| Max Storage | 26 acre-ft |
| Normal Storage | 19 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 25 sq mi |
| Max Discharge | 8 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | JOHN DAVID JOHNSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 11/12/2002 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO51226 |
| Federal ID | MO51226 |
| More Info | State Dam Safety Program |