Nagel Bros. Reservoir Report
Last Updated: December 13, 2025
Nagel Bros.
°F
°F
mph
Wind
%
Humidity
Summary
is a privately owned dam located in Potter, South Dakota, along the TR-CHEYENNE CREEK. Constructed in 1951, this earth dam stands at a height of 18 feet and has a length of 415 feet. It serves the primary purpose of water storage, with a capacity of 58 acre-feet and a maximum discharge of 630 cubic feet per second. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with state permitting, inspection, and enforcement in place to ensure its integrity.
Despite being categorized as having a low hazard potential and its condition not rated, Nagel Bros. remains an essential structure for water resource management in the region. With a normal storage capacity of 28 acre-feet, the dam plays a crucial role in regulating water flow and providing a reliable water supply. While the dam has not been assessed for its emergency action plan or risk management measures, its presence underscores the importance of maintaining and monitoring critical infrastructure for climate resilience and water security.
As part of the St. Paul District of the US Army Corps of Engineers, Nagel Bros. contributes to the overall water management efforts in the area. With its strategic location and functionality, this dam serves as a key component in the broader network of water infrastructure, supporting agricultural, industrial, and environmental needs. As water resource and climate enthusiasts, understanding the role and significance of dams like Nagel Bros. can help us appreciate the intricate balance required for sustainable water management in a changing climate.
Year Completed |
1951 |
Dam Length |
415 |
Dam Height |
18 |
River Or Stream |
TR-CHEYENNE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
58 |
Hazard Potential |
Low |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Grand R At Little Eagle Sd
|
47cfs |
Bad R Near Fort Pierre Sd
|
7cfs |
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.
Nagel Bros.