John Deere Tcao Dam is an earth dam located in Black Hawk County, Iowa, built in 1980. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 15 ft15 ft tall and 1,250 ft long. 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 John Deere Tcao Dam
The primary purpose of John Deere Tcao Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by John Deere Waterloo Works (private). It impounds the Tr to Cedar Creek near Waterloo.
The dam stands 15 feet tall and stretches 1,250 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 75 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1980, the structure is 46 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/22/2024.
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Location
| State | Iowa |
| County | Black Hawk |
| Nearest City | Waterloo |
| River/Stream | Tr to Cedar Creek |
| Coordinates | 42.51360, -92.26990 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 1,250 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | John Deere Waterloo Works |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/22/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04325 |
| Federal ID | IA04325 |
| More Info | State Dam Safety Program |