Hamak is an earth dam located in Faulk County, South Dakota, built in 1938. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 400 ft long, taller than 62% of U.S. dams with a recorded height. 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 Hamak
The primary purpose of Hamak is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Blumengard Hutterian Brethren (private). It impounds the Snake Creek Trib.
The dam stands 28 feet tall and stretches 400 feet across, and has a maximum storage capacity of 490 acre-feet. Completed in 1938, 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. The most recent inspection on record was 11/05/2019.
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Location
| State | South Dakota |
| County | Faulk |
| Nearest City | None |
| River/Stream | Snake Creek Trib |
| Coordinates | 45.23802, -99.13295 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 400 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 490 acre-ft |
| Max Storage | 490 acre-ft |
| Normal Storage | 132 acre-ft |
| Max Discharge | 1,400 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Blumengard Hutterian Brethren |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/05/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00659 |
| Federal ID | SD00659 |
| More Info | State Dam Safety Program |