Lyons Dam
Lyons Dam is a gravity dam located in Ionia County, Michigan, built in 1900. It carries a Low hazard potential classification and has a poor condition assessment.
About Lyons Dam
The primary purpose of Lyons Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Village Of Lyons (local government). It impounds the Grand River near Lyons.
The dam stands 18 feet tall and stretches 370 feet across, creates a reservoir covering 120 acres, has a maximum storage capacity of 1,820 acre-feet, and collects water from a drainage area of 1,758 square miles. Completed in 1900, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 10/14/2013. That was over 12 years ago.
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Location
| State | Michigan |
| County | Ionia |
| Nearest City | Lyons |
| River/Stream | Grand River |
| Coordinates | 42.98145, -84.95018 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 370 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 1,820 acre-ft |
| Max Storage | 1,820 acre-ft |
| Normal Storage | 620 acre-ft |
| Surface Area | 120 acres |
| Drainage Area | 1,758 sq mi |
| Max Discharge | 27,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Village of Lyons |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 10/14/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00509 |
| Federal ID | MI00509 |
| More Info | State Dam Safety Program |