Delzer No.2 Reservoir Report
Nearby: Delzer No.1 Delzer No.3
Last Updated: December 5, 2025
Delzer No.2, located in Butte, South Dakota, is a privately owned dam on Hildibrand Creek that serves as a crucial water resource in the region.
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Summary
Completed in 1974, this earth dam stands at 28 feet high and has a maximum storage capacity of 374 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," the dam plays a vital role in flood control and water supply management for the surrounding area.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Delzer No.2 is subject to state regulation, permitting, inspection, and enforcement to ensure its safety and compliance with environmental standards. The dam's primary purpose, although unspecified, is to provide water storage and control water flow on Hildibrand Creek. With a maximum discharge capacity of 2620 cubic feet per second, the dam is equipped to handle potential flood events and protect downstream areas from inundation.
Although not rated for condition assessment, Delzer No.2 has not been assigned a Dam Safety Action Classification (DSAC) date, indicating that no immediate risk management measures are required. Despite the lack of detailed emergency preparedness information, the dam's low hazard potential suggests that it poses minimal threat to downstream communities. With its strategic location and role in water resource management, Delzer No.2 stands as a key infrastructure asset in Butte, South Dakota, contributing to the resilience of the region's water supply and environmental sustainability.
Year Completed |
1974 |
Dam Length |
656 |
Dam Height |
28 |
River Or Stream |
HILDIBRAND CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
374 |
Hazard Potential |
Low |
Nid Height |
28 |
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.
Delzer No.2