Westfork Main Dam
Westfork Main Dam is an other dam located in Reynolds County, Missouri, built in 1992. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Westfork Main Dam
The primary purpose of Westfork Main Dam is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is private-owned. It impounds the Tr West Fork Black River near Reynolds.
The dam stands 132 feet tall and stretches 800 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 7,500 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1992, the structure is 34 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 04/14/2022.
At 132 feet, this dam is taller than 99% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Missouri dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Missouri |
| County | Reynolds |
| Nearest City | Reynolds |
| River/Stream | Tr West Fork Black River |
| Coordinates | 37.48756, -91.11024 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 132 ft |
| Dam Height | 132 ft |
| Dam Length | 800 ft |
| Year Completed | 1992 (34 years old) |
Storage & Hydraulics
| NID Storage | 7,500 acre-ft |
| Max Storage | 7,500 acre-ft |
| Normal Storage | 7,500 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,638 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/14/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO31833 |
| Federal ID | MO31833 |
| More Info | State Dam Safety Program |