Big Rock Creek Farm Reservoir Report

Last Updated: December 6, 2025

Nestled in the picturesque countryside of St.


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Summary

Croix Falls, Wisconsin, Big Rock Creek Farm serves as a vital water resource for the area. This private-owned dam, known as Big Rock Creek, stands as a gravity structure with a height of 20 feet and a storage capacity of 50 acre-feet. Primarily used for fire protection, stock, and small fish pond purposes, the dam plays a crucial role in maintaining water supply and supporting local ecosystems.

Managed by the Wisconsin Department of Natural Resources, this dam is subject to state regulation, inspection, and enforcement to ensure its structural integrity and safety. Despite being classified as having a low hazard potential, the condition assessment of Big Rock Creek Farm's dam is rated as fair, with a risk assessment indicating very high risk. The dam has a controlled spillway type and a maximum discharge capacity of 1250 cubic feet per second, emphasizing its importance in flood control and water management in the region.

With its serene location, essential functions, and regulatory oversight, Big Rock Creek Farm stands as a significant water resource and infrastructure that not only supports the local community's needs but also plays a crucial role in water conservation, climate resilience, and environmental protection efforts in Wisconsin.

Dam Height

20

River Or Stream

Big Rock Creek

Primary Dam Type

Gravity

Surface Area

5

Hydraulic Height

10

Nid Storage

50

Structural Height

20

Hazard Potential

Low

Nid Height

20
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.