Hackman Dam is an earth dam located in Macon County, Missouri, built in 1998. It carries a Low hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 650 ft long. 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 Hackman Dam
The primary purpose of Hackman 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 Wayne Hackman (private). It impounds the Narrows Creek near Excello.
The dam stands 23 feet tall and stretches 650 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 62 acre-feet, and collects water from a drainage area of 187 square miles. Completed in 1998, the structure is 28 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 | Macon |
| Nearest City | Excello |
| River/Stream | Narrows Creek |
| Coordinates | 39.66251, -92.45949 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 650 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 62 acre-ft |
| Max Storage | 62 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 187 sq mi |
| Max Discharge | 12 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Wayne Hackman |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50781 |
| Federal ID | MO50781 |
| More Info | State Dam Safety Program |