Vineyards Twin Lakes Lower Dam
Vineyards Twin Lakes Lower Dam is an earth dam located in St. Francois County, Missouri, built in 1958. It carries a High hazard potential classification.
About Vineyards Twin Lakes Lower Dam
The primary purpose of Vineyards Twin Lakes Lower Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by A L Vineyard Const Co (private). It impounds the Tr Flat River near Elvins.
The dam stands 30 feet tall, creates a reservoir covering 13 acres, has a maximum storage capacity of 209 acre-feet, and collects water from a drainage area of 580 square miles. Completed in 1958, the structure is well into its service life at over 50 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.
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 | St. Francois |
| Nearest City | Elvins |
| River/Stream | Tr Flat River |
| Coordinates | 37.78510, -90.60186 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 209 acre-ft |
| Max Storage | 209 acre-ft |
| Normal Storage | 140 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 580 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | A L VINEYARD CONST CO |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30276 |
| Federal ID | MO30276 |
| More Info | State Dam Safety Program |