Mcilwaine Farm Lake Dam is an earth dam located in Ray County, Missouri, built in 1980. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 360 ft long, taller than 55% 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 Mcilwaine Farm Lake Dam
The primary purpose of Mcilwaine Farm 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 Wes Mcilwaine (private). It impounds the Tr-rocky Fork near Hardin.
The dam stands 26 feet tall and stretches 360 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 33 acre-feet, and collects water from a drainage area of 96 square miles. Completed in 1980, the structure is 46 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 | Ray |
| Nearest City | Hardin |
| River/Stream | Tr-rocky Fork |
| Coordinates | 39.38813, -94.14364 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 25 ft |
| Dam Length | 360 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 33 acre-ft |
| Max Storage | 33 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 96 sq mi |
| Max Discharge | 378 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Wes Mcilwaine |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50427 |
| Federal ID | MO50427 |
| More Info | State Dam Safety Program |