Millam Lake Dam is an earth dam located in Henry County, Missouri, built in 1974. It carries a Significant 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 Millam Lake Dam
The primary purpose of Millam Lake 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 James Millam (private). It impounds the Tr-fields Creek near Warsaw.
The dam stands 23 feet tall and stretches 650 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 54 acre-feet, and collects water from a drainage area of 121 square miles. Completed in 1974, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
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Location
| State | Missouri |
| County | Henry |
| Nearest City | Warsaw |
| River/Stream | Tr-fields Creek |
| Coordinates | 38.47372, -93.76252 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 22 ft |
| Dam Length | 650 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 54 acre-ft |
| Max Storage | 54 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 121 sq mi |
| Max Discharge | 59 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | James Millam |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50202 |
| Federal ID | MO50202 |
| More Info | State Dam Safety Program |