Krogman No.4 Reservoir Report
Nearby: Richardson Number 1 Hix Number 1
Last Updated: December 8, 2025
Krogman No.4 is a privately owned Earth dam located in Jones, South Dakota.
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Summary
Constructed in 1957, this dam stands at a height of 30 feet and has a length of 362 feet. It serves the primary purpose of water resource management, with a storage capacity of 24 acre-feet and a maximum discharge of 2400 cubic feet per second. Despite being rated as having a low hazard potential, the condition of Krogman No.4 has not been assessed.
Managed by the South Dakota Department of Environment and Natural Resources, Krogman No.4 is regulated, permitted, inspected, and enforced by state authorities. The dam is situated on the TR Little White Offstream river, within the St. Paul District of the US Army Corps of Engineers. While the dam's Emergency Action Plan status and risk assessment details are not available, it is essential for water resource and climate enthusiasts to monitor the maintenance and management of this critical infrastructure in order to ensure its safety and effectiveness in mitigating flood risks in the region.
Owned by a private entity, Krogman No.4 represents a vital component of the water management infrastructure in South Dakota. With its strategic location and functionality, this dam plays a crucial role in regulating water flow and minimizing flood risks in the area. As a point of interest for water resource and climate enthusiasts, staying informed about the condition and management of Krogman No.4 is essential for ensuring the safety and sustainability of this important water resource asset.
Year Completed |
1957 |
Dam Length |
362 |
Dam Height |
30 |
River Or Stream |
TR LITTLE WHITE OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
24 |
Hazard Potential |
Low |
Nid Height |
30 |
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.
Krogman No.4