Thompson Dam is an earth dam located in Alcona County, Michigan, built in 1979. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 400 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 Thompson Dam
Thompson Dam is a dam in Alcona, Michigan. The dam is owned by Richard Thompson (private). It impounds the Tributary to Devils River near Spruce.
The dam stands 12 feet tall and stretches 400 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1979, the structure is 47 years 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. The most recent inspection on record was 06/01/1996. That was over 30 years ago.
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Location
| State | Michigan |
| County | Alcona |
| Nearest City | Spruce |
| River/Stream | Tributary to Devils River |
| Coordinates | 44.84167, -83.45833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 400 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 270 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Richard Thompson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/01/1996 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00800 |
| Federal ID | MI00800 |
| More Info | State Dam Safety Program |