Little Raccoon Dam No. 2c - Rockville Dam
Little Raccoon Dam No. 2c - Rockville Dam is an earth dam located in Parke County, Indiana, built in 1971. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Little Raccoon Dam No. 2c - Rockville Dam
The primary purpose of Little Raccoon Dam No. 2c - Rockville Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Little Raccoon Conservancy District (local government). It impounds the Williams Creek near Rockville.
The dam stands 55 feet tall and stretches 930 feet across, creates a reservoir covering 99 acres, has a maximum storage capacity of 2,861 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1971, 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 12/10/2018. That was 7 years ago, which is on the longer end for a high-hazard structure.
At 55 feet, this dam is taller than 94% of dams nationwide.
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 Indiana 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 | Indiana |
| County | Parke |
| Nearest City | Rockville |
| River/Stream | Williams Creek |
| Coordinates | 39.77572, -87.21780 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 55 ft |
| Dam Height | 55 ft |
| Dam Length | 930 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 2,861 acre-ft |
| Max Storage | 2,861 acre-ft |
| Normal Storage | 1,121 acre-ft |
| Surface Area | 99 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 18,250 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | LITTLE RACCOON CONSERVANCY DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/10/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IN00201 |
| Federal ID | IN00201 |
| More Info | State Dam Safety Program |