Krogman No. 2 Reservoir Report
Last Updated: December 8, 2025
Krogman No.
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Summary
2 is a privately owned earth dam located in Mellette, South Dakota, along the tributary of Pine Creek. Completed in 1962, this dam stands at a height of 26 feet and has a storage capacity of 18 acre-feet, with a normal storage level of 12 acre-feet. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Krogman No. 2 is subject to state regulations, permitting, inspection, and enforcement. Although the dam has not been modified in recent years, it is equipped with a maximum discharge capacity of 500 cubic feet per second and does not have a designated spillway type or width. Despite its low hazard potential, the dam does not have an Emergency Action Plan (EAP) prepared, and its risk assessment and management measures remain undisclosed.
As a significant water resource structure in the area, Krogman No. 2 serves as a critical infrastructure for managing water flow and storage. With its strategic location and design, this dam plays a crucial role in supporting the local ecosystem and water supply while requiring ongoing monitoring and maintenance to ensure its continued safety and functionality in the face of changing climate conditions.
Year Completed |
1962 |
Dam Length |
340 |
Dam Height |
26 |
River Or Stream |
TRIB. PINE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
18 |
Hazard Potential |
Low |
Nid Height |
26 |
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. 2