Lake of the Four Seasons (dam B) is an earth dam located in Porter County, Indiana, built in 1966. It carries a High hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 31 ft31 ft tall and 290 ft long, taller than 72% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Lake of the Four Seasons (dam B)
The primary purpose of Lake of the Four Seasons (dam B) is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake of the Four Seasons Property Owners Association (private).
The dam stands 31 feet tall and stretches 290 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 1,375 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1966, 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 09/24/2015. That was 11 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
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 | Porter |
| Coordinates | 41.40136, -87.21524 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 290 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 1,375 acre-ft |
| Max Storage | 1,375 acre-ft |
| Normal Storage | 410 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 5,335 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake of the Four Seasons Property Owners Association |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 09/24/2015 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IN00512 |
| Federal ID | IN00512 |
| More Info | State Dam Safety Program |