Lamb Lake Estates Dam
Lamb Lake Estates Dam is an earth dam located in Johnson County, Indiana, built in 1972. It carries a High hazard potential classification and has a fair condition assessment.
About Lamb Lake Estates Dam
The primary purpose of Lamb Lake Estates Dam 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 Lamb Lake Lot Owners Association (private). It impounds the Indian Creek.
The dam stands 82 feet tall and stretches 790 feet across, creates a reservoir covering 309 acres, has a maximum storage capacity of 13,000 acre-feet, and collects water from a drainage area of 9 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 09/30/2020.
At 82 feet, this dam is taller than 97% 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 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 | Johnson |
| River/Stream | Indian Creek |
| Coordinates | 39.36115, -86.19147 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 82 ft |
| Dam Height | 82 ft |
| Dam Length | 790 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 13,000 acre-ft |
| Max Storage | 13,000 acre-ft |
| Normal Storage | 7,250 acre-ft |
| Surface Area | 309 acres |
| Drainage Area | 9 sq mi |
| Max Discharge | 27,030 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | LAMB LAKE LOT OWNERS ASSOCIATION |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 09/30/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IN00133 |
| Federal ID | IN00133 |
| More Info | State Dam Safety Program |