Old Quarry Lake Dam
Old Quarry Lake Dam is an earth dam located in Cerro Gordo County, Iowa, built in 1977. It carries a Significant hazard potential classification and has a fair condition assessment.
About Old Quarry Lake Dam
The primary purpose of Old Quarry Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Cerro Gordo County Conservation Board (local government). It impounds the Tr- Winnebago River near Mason City.
The dam stands 13 feet tall and stretches 1,012 feet across, creates a reservoir covering 24 acres, has a maximum storage capacity of 230 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1977, the structure is 49 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 05/30/2023.
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Location
| State | Iowa |
| County | Cerro Gordo |
| Nearest City | Mason City |
| River/Stream | Tr- Winnebago River |
| Coordinates | 43.18800, -93.20600 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 1,012 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 230 acre-ft |
| Max Storage | 230 acre-ft |
| Normal Storage | 152 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Cerro Gordo County Conservation Board |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/30/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01900 |
| Federal ID | IA01900 |
| More Info | State Dam Safety Program |