Piotter Dam is an earth dam located in Roberts County, South Dakota, built in 2009. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 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 Piotter Dam
The primary purpose of Piotter Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Marviin Piotter (private). It impounds the Tr Minnesota - Whetstone.
The dam stands 17 feet tall and stretches 400 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 175 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 2009, the structure is relatively new.
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 | Roberts |
| River/Stream | Tr Minnesota - Whetstone |
| Coordinates | 45.69667, -96.86739 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 400 ft |
| Year Completed | 2009 (17 years old) |
Storage & Hydraulics
| NID Storage | 175 acre-ft |
| Max Storage | 175 acre-ft |
| Normal Storage | 84 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 1,250 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Marviin Piotter |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02591 |
| Federal ID | SD02591 |
| More Info | State Dam Safety Program |