Summary
Mosiman, located in Sully, South Dakota, is a privately owned earth dam completed in 1947 with a height of 15 feet and a storage capacity of 90 acre-feet. Situated on the TR MISSONot RatedI river or stream, it falls under the jurisdiction of the South Dakota Department of Environment and Natural Resources (DENR) and is regulated, permitted, inspected, and enforced by the state.
With a low hazard potential and a condition assessment of "Not Rated," A. Mosiman is currently maintained without any associated structures or federal agency involvement. While it has a maximum discharge capacity of 5000 cubic feet per second, details on spillway type and width, outlet gates, and inspection frequency are not provided in the data.
Despite lacking certain specifics, A. Mosiman serves as a vital water resource infrastructure in South Dakota, contributing to flood control and water storage in the region. Its historical significance, combined with its state-regulated status and low hazard potential, makes it a noteworthy component of the local water management system for water resource and climate enthusiasts to appreciate and monitor.
Year Completed |
1947 |
Dam Length |
1132 |
Dam Height |
15 |
River Or Stream |
TR MISSONot RatedI |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
90 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams 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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
A. Mosiman