Matter is an earth dam located in Ziebach County, South Dakota, built in 1938. It carries a Low hazard potential classification.
Dam profile
NID height · 18 ft18 ft tall and 590 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 Matter
The primary purpose of Matter is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Matter (private). It impounds the Moreau.
The dam stands 18 feet tall and stretches 590 feet across, and has a maximum storage capacity of 335 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.
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Location
| State | South Dakota |
| County | Ziebach |
| Nearest City | None |
| River/Stream | Moreau |
| Coordinates | 45.34999, -101.80332 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 590 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 335 acre-ft |
| Max Storage | 335 acre-ft |
| Normal Storage | 104 acre-ft |
| Max Discharge | 1,600 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Matter |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00312 |
| Federal ID | SD00312 |
| More Info | State Dam Safety Program |