Summary
Built in 1976 by the USDA NRCS, this earth dam stands at a height of 28 feet and stretches 400 feet in length, providing essential functions for fire protection, stock, and small fish pond purposes. The dam has a storage capacity of 20 acre-feet and a maximum discharge of 47 cubic feet per second, with a low hazard potential and a moderate risk assessment rating.
Despite being under state jurisdiction and regulation by WIDNR, Helwig has not been rated for its condition assessment and lacks an Emergency Action Plan (EAP) as of the last inspection in 2010. The dam is regularly inspected every 10 years, with a risk management plan yet to be implemented. With its uncontrolled spillway type and limited surface area, Helwig serves as a crucial water resource structure in the region, highlighting the importance of proper maintenance and risk assessment for climate enthusiasts and water resource management professionals.
As a part of the Detroit District's water infrastructure, Helwig provides vital support for local water management efforts in Wisconsin. With its primary purpose focused on safeguarding against fire hazards and supporting aquatic ecosystems, the dam plays a key role in maintaining the resilience of the surrounding environment. Continued monitoring and maintenance of Helwig are essential to ensure its long-term functionality and safety, emphasizing the need for ongoing collaboration between private owners, state agencies, and conservation organizations to protect and preserve this valuable water resource.
Year Completed |
1976 |
Dam Length |
400 |
Dam Height |
28 |
River Or Stream |
TR BUFFALO RIVER |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
28 |
Drainage Area |
2 |
Nid Storage |
20 |
Structural Height |
28 |
Hazard Potential |
Low |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Chippewa River At Durand
|
4160cfs |
Zumbro River At Kellogg
|
1550cfs |
Trempealeau River At Arcadia
|
400cfs |
Trempealeau River At Dodge
|
953cfs |
Red Cedar River At Menomonie
|
767cfs |
Mississippi River At Winona
|
17900cfs |
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.
Helwig