Tecumseh Dam is an earth dam located in Lenawee County, Michigan, built in 1907. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 20 ft20 ft tall and 210 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 Tecumseh Dam
The primary purpose of Tecumseh Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lenawee County Drain Commission (private). It impounds the River Raisin near Tecumseh.
The dam stands 20 feet tall and stretches 210 feet across, creates a reservoir covering 51 acres, has a maximum storage capacity of 865 acre-feet, and collects water from a drainage area of 222 square miles. Completed in 1907, the structure is over a century 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. An emergency action plan is in place for this dam. The most recent inspection on record was 02/25/2020.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Michigan |
| County | Lenawee |
| Nearest City | Tecumseh |
| River/Stream | River Raisin |
| Coordinates | 42.01333, -83.94222 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 210 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 865 acre-ft |
| Max Storage | 865 acre-ft |
| Normal Storage | 265 acre-ft |
| Surface Area | 51 acres |
| Drainage Area | 222 sq mi |
| Max Discharge | 5,505 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lenawee County Drain Commission |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 02/25/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MI00593 |
| Federal ID | MI00593 |
| More Info | State Dam Safety Program |