Piotter Dam dam
Piotter Dam
Piotter Dam, located in Roberts, South Dakota, is a privately owned structure that plays a crucial role in managing water resources in the area. Constructed in 2009 by KONECHNE ENG., this earth dam stands at a height of 17 feet and stretches 400 feet in length. It has a storage capacity of 175 acre-feet, with a normal storage level of 84 acre-feet, serving the TR MINNESOTA - WHETSTONE river/stream.
Despite its low hazard potential and moderate risk assessment rating, Piotter Dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR). It is subject to state jurisdiction, permitting, inspection, and enforcement, ensuring that the structure is maintained and operated safely. The dam features an uncontrolled spillway with a width of 60 feet, capable of handling a maximum discharge of 1250 cubic feet per second.
Overall, Piotter Dam serves as a vital component of the local water management infrastructure, providing essential flood control and water storage capabilities. With its strategic location and design features, it exemplifies the importance of proper dam construction and regulation in safeguarding water resources and mitigating potential risks associated with climate variability.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Piotter Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Minnesota River Near Peever | 56 cfs | → |
| Bois De Sioux River Near White Rock | 96 cfs | → |
| Whetstone River Near Big Stone City | 64 cfs | → |
| Bois De Sioux River Near Doran | 154 cfs | → |
| Minnesota River At Ortonville | 81 cfs | → |
| Wild Rice River Nr Rutland | 56 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Piotter Dam.
Boat launches
- Mn 27 4924, Traverse County
- Mn 27 4906, Traverse County
- T149 5800, Traverse County
- Roberts County
- Roy Lake State Park
- Rocky Point Big Stone City
Track Piotter Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Piotter Dam
Where does the data for Piotter Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Piotter Dam.