Lake Deturk Dam
Lake Deturk Dam is an earth dam located in Morgan County, Indiana, built in 1972. It carries a High hazard potential classification and has a poor condition assessment.
About Lake Deturk Dam
The primary purpose of Lake Deturk Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Deturk Conservancy District (local government). It impounds the Unnamed Tributary Grassy Fork.
The dam stands 30 feet tall and stretches 590 feet across, creates a reservoir covering 29 acres, has a maximum storage capacity of 670 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1972, 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 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 05/07/2020.
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 | Morgan |
| River/Stream | Unnamed Tributary Grassy Fork |
| Coordinates | 39.43991, -86.40625 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 590 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 670 acre-ft |
| Max Storage | 670 acre-ft |
| Normal Storage | 425 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 63 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE DETURK CONSERVANCY DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 05/07/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IN03445 |
| Federal ID | IN03445 |
| More Info | State Dam Safety Program |