Hadwiger Dam Reservoir Report

Last Updated: December 12, 2025

Hadwiger Dam, located in Buffalo County, Nebraska, was completed in 1978 by the USDA NRCS for the primary purpose of flood risk reduction along the Wood River.


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Summary

This earth dam stands at a height of 26 feet, with a length of 980 feet, and has a storage capacity of 520 acre-feet. The dam is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections to ensure its structural integrity.

Managed by the local government, Hadwiger Dam plays a crucial role in protecting the surrounding area from potential flooding events. With a low hazard potential and a satisfactory condition assessment, the dam is deemed to be in good working order. The dam's location in Riverdale, Nebraska, makes it a key component of the region's water resource management infrastructure.

Water resource and climate enthusiasts will appreciate the significance of Hadwiger Dam in mitigating flood risks and ensuring water security for the Buffalo County community. As a vital piece of infrastructure designed to safeguard against natural disasters, the dam stands as a testament to the collaborative efforts of government agencies and designers in creating sustainable solutions for water management in Nebraska.

Year Completed

1978

Dam Length

980

Dam Height

26

River Or Stream

TR-WOOD RIVER

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

26

Drainage Area

2.7

Nid Storage

520

Structural Height

27

Hazard Potential

Low

Foundations

Soil

Nid Height

27
       
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.