Evans Dam is an earth dam located in Clark County, Missouri, built in 1994. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 198 ft long, taller than 78% 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 Evans Dam
The primary purpose of Evans 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 Gilford Evans (private). It impounds the Tr-little Wyaconda River near Fairmont.
The dam stands 34 feet tall and stretches 198 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 28 acre-feet, and collects water from a drainage area of 377 square miles. Completed in 1994, the structure is 32 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.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Missouri |
| County | Clark |
| Nearest City | Fairmont |
| River/Stream | Tr-little Wyaconda River |
| Coordinates | 40.31596, -91.85144 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 32 ft |
| Dam Length | 198 ft |
| Year Completed | 1994 (32 years old) |
Storage & Hydraulics
| NID Storage | 28 acre-ft |
| Max Storage | 28 acre-ft |
| Normal Storage | 16 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 377 sq mi |
| Max Discharge | 29 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Gilford Evans |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50620 |
| Federal ID | MO50620 |
| More Info | State Dam Safety Program |