Twin-rush Creek Dam No. 1
Twin-rush Creek Dam No. 1 is an earth dam located in Washington County, Indiana, built in 1980. It carries a High hazard potential classification and has a poor condition assessment.
About Twin-rush Creek Dam No. 1
The primary purpose of Twin-rush Creek Dam No. 1 is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Twin Rush Creek Conservancy District (local government). It impounds the Twin Creek near Lawrenceport.
The dam stands 50 feet tall and stretches 970 feet across, creates a reservoir covering 40 acres, has a maximum storage capacity of 3,978 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1980, the structure is 46 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 08/23/2019.
At 50 feet, this dam is taller than 93% 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 | Washington |
| Nearest City | Lawrenceport |
| River/Stream | Twin Creek |
| Coordinates | 38.68931, -86.21987 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 50 ft |
| Dam Height | 50 ft |
| Dam Length | 970 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 3,978 acre-ft |
| Max Storage | 3,978 acre-ft |
| Normal Storage | 1,951 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 8 sq mi |
| Max Discharge | 6,282 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | TWIN RUSH CREEK CONSERVANCY DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 08/23/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IN00820 |
| Federal ID | IN00820 |
| More Info | State Dam Safety Program |