Krogman #1 Reservoir Report
Nearby: Astleford No. 1 Krogman Harold No.1
Last Updated: December 8, 2025
Located in Mellette, South Dakota, Krogman #1 is a privately owned earth dam completed in 1935.
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Summary
This dam, standing at a height of 13 feet and a length of 1600 feet, serves as a vital water resource structure along TR Dry Creek. With a storage capacity of 78 acre-feet, it plays a crucial role in regulating water flow and ensuring a stable water supply for the surrounding area.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Krogman #1 is subject to state regulations and inspections to ensure its safety and functionality. Despite being classified as having a low hazard potential, the dam's condition assessment is currently marked as "Not Rated," indicating a need for further evaluation and maintenance. As a key feature in the local water infrastructure, it is essential to monitor Krogman #1 closely to address any potential risks and ensure its continued effectiveness in water management.
Although Krogman #1 has not had its Emergency Action Plan (EAP) assessed or updated recently, it remains a crucial component in the water management system of the area. With its modest height and storage capacity, this earth dam plays a significant role in maintaining water levels and ensuring a reliable water supply for the community. As climate change continues to impact water resources, monitoring and maintaining structures like Krogman #1 will be essential in adapting to changing environmental conditions and safeguarding water availability for the future.
Year Completed |
1935 |
Dam Length |
1600 |
Dam Height |
13 |
River Or Stream |
TR DRY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
13 |
Nid Storage |
78 |
Hazard Potential |
Low |
Nid Height |
13 |
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 #1