H-1 Pool Dam
H-1 Pool Dam is an earth dam located in Schoolcraft County, Michigan, built in 1937. It carries a Low hazard potential classification and has a poor condition assessment.
About H-1 Pool Dam
H-1 Pool Dam is a dam in Schoolcraft, Michigan. The dam is owned by Doi Fws (federal). It impounds the Grays Creek-offstream near Manistique.
The dam stands 8 feet tall and stretches 7,260 feet across, creates a reservoir covering 120 acres, and has a maximum storage capacity of 384 acre-feet. Completed in 1937, the structure is well-established, with more than 75 years of service.
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 07/17/2018.
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Location
| State | Michigan |
| County | Schoolcraft |
| Nearest City | Manistique |
| River/Stream | Grays Creek-offstream |
| Coordinates | 46.28500, -85.96667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 7,260 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 384 acre-ft |
| Max Storage | 384 acre-ft |
| Normal Storage | 240 acre-ft |
| Surface Area | 120 acres |
| Max Discharge | 1,600 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | DOI FWS |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/17/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00633 |
| Federal ID | MI00633 |
| More Info | State Dam Safety Program |