Allen Dam is an earth dam located in Mercer County, Missouri. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall, taller than 50% 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 Allen Dam
The primary purpose of Allen Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Hadley Stewart (private). It impounds the Tr-west Muddy Creek near Modena.
The dam stands 25 feet tall, creates a reservoir covering 2 acres, has a maximum storage capacity of 27 acre-feet, and collects water from a drainage area of 20 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.
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Location
| State | Missouri |
| County | Mercer |
| Nearest City | Modena |
| River/Stream | Tr-west Muddy Creek |
| Coordinates | 40.28816, -93.66019 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
Storage & Hydraulics
| NID Storage | 27 acre-ft |
| Max Storage | 27 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 20 sq mi |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Hadley Stewart |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11763 |
| Federal ID | MO11763 |
| More Info | State Dam Safety Program |