River Cement Company Dam
River Cement Company Dam is an earth dam located in Jefferson County, Missouri, built in 1965. It carries a High hazard potential classification and has a satisfactory condition assessment.
About River Cement Company Dam
River Cement Company Dam is a dam in Jefferson, Missouri. The dam is owned by River Cement Co,selma Pl (private). It impounds the Tributary To Mississippi Riv. near Crystal City.
The dam stands 57 feet tall and stretches 605 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 595 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1965, 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. 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 09/01/2022.
At 57 feet, this dam is taller than 95% 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 | Jefferson |
| Nearest City | Crystal City |
| River/Stream | Tributary To Mississippi Riv. |
| Coordinates | 38.17569, -90.33628 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 57 ft |
| Dam Height | 57 ft |
| Dam Length | 605 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 595 acre-ft |
| Max Storage | 595 acre-ft |
| Normal Storage | 316 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 2,712 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | RIVER CEMENT CO,SELMA PL |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/01/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO30420 |
| Federal ID | MO30420 |
| More Info | State Dam Safety Program |