East Rodrock Lake is an earth dam located in Johnson County, Kansas, built in 2010. It carries a High hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 1,170 ft long, taller than 62% 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 East Rodrock Lake
The primary purpose of East Rodrock Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Rodrock Enterprises LP (private).
The dam stands 28 feet tall and stretches 1,170 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 299 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2010, the structure is relatively new.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 12/07/2009. That was 16 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 Kansas 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 | Kansas |
| County | Johnson |
| Nearest City | Overland Park |
| Coordinates | 38.76104, -94.71294 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 23 ft |
| Dam Length | 1,170 ft |
| Year Completed | 2010 (16 years old) |
Storage & Hydraulics
| NID Storage | 299 acre-ft |
| Max Storage | 299 acre-ft |
| Normal Storage | 130 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 4,750 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Rodrock Enterprises LP |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Last Inspection | 12/07/2009 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | KS09336 |
| Federal ID | KS09336 |
| More Info | State Dam Safety Program |