Clark County 5 Reservoir Report

Last Updated: December 13, 2025

Clark County 5, located in Clark County, Wisconsin, is a gravity dam on Five Mile Creek primarily used for irrigation purposes.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1934, this dam stands at a height of 12 feet and has a storage capacity of 120 acre-feet. With a normal storage level of 90 acre-feet and a surface area of 13 acres, Clark County 5 plays a crucial role in providing water for agricultural needs in the region.

Despite its low hazard potential, Clark County 5 is considered to have a very high risk due to its age and the lack of a recent condition assessment. The dam has a controlled spillway and a maximum discharge capacity of 1760 cubic feet per second. While it is regulated and inspected by the Wisconsin Department of Natural Resources, there is a need for more frequent inspections and potential risk management measures to ensure the safety and functionality of this important water resource infrastructure.

Water resource and climate enthusiasts in the area should keep a close eye on the maintenance and management of Clark County 5 to safeguard its effectiveness in providing irrigation water and recreational opportunities. With its historical significance and role in supporting local agriculture, efforts to improve its condition assessment and risk management strategies are essential for the long-term sustainability of this vital infrastructure.

Years Modified

1936 - Other

Year Completed

1934

Dam Length

475

Dam Height

12

River Or Stream

FIVE MILE CREEK

Primary Dam Type

Gravity

Surface Area

13

Hydraulic Height

10

Drainage Area

17

Nid Storage

120

Structural Height

12

Hazard Potential

Low

Nid Height

12
       
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.