Klein Reservoir Report
Nearby: Nihles Gobracht, John
Last Updated: December 14, 2025
Klein is a privately owned dam located in Grant, Wisconsin, along the Unnamed Tributary to Little Platte River.
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Summary
Built in 1972 by the USDA NRCS, Klein serves primarily for recreation purposes, with a dam height of 29 feet and a length of 370 feet. The dam has a storage capacity of 40 acre-feet and a normal storage level of 8 acre-feet, covering a surface area of 3 acres and draining a 0.5 square mile watershed.
Managed by the Wisconsin Department of Natural Resources, Klein is regulated, permitted, inspected, and enforced by the state agency. The dam's condition assessment in May 2020 rated it as fair with low hazard potential. Although it meets current guidelines, a moderate risk assessment of 3 indicates the need for ongoing risk management measures. The last inspection in July 2018 noted a 10-year inspection frequency for this earth dam with buttress core type.
Overall, Klein dam provides a valuable recreational resource in the region while maintaining a moderate risk level that requires continued monitoring and management. With its low hazard potential and fair condition, the dam's structural integrity and safety are of utmost importance to protect both the environment and surrounding communities along the Little Platte River watershed.
Year Completed |
1972 |
Dam Length |
370 |
Dam Height |
29 |
River Or Stream |
Un Trib to Little Platte |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
29 |
Drainage Area |
0.5 |
Nid Storage |
40 |
Structural Height |
29 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Platte River Near Rockville
|
85cfs |
Grant River At Burton
|
345cfs |
Pecatonica River At Darlington
|
218cfs |
Sinsinawa River Near Menominee
|
19cfs |
Wisconsin River At Muscoda
|
6230cfs |
East Br Pecatonica River Near Blanchardville
|
162cfs |
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.
Klein