Tom Hauk No.1 Reservoir Report

Last Updated: December 13, 2025

Tom Hauk No.1 is a privately owned dam located in Walworth, South Dakota, with a primary purpose that is not specified.


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Summary

The dam, completed in 1952, is classified as an Earth-type dam with a height of 27 feet and a length of 430 feet. It has a storage capacity of 40 acre-feet and a maximum discharge of 1200 cubic feet per second. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and is considered to have a low hazard potential.

Despite being in a rural area with no nearby city, the dam plays a crucial role in managing water resources and protecting downstream areas from potential flooding. It is subject to regular state inspections, permitting, and enforcement to ensure its structural integrity and compliance with safety standards. The dam has not been rated for its condition assessment, but it meets the necessary guidelines for emergency action plans, although specific dates for last inspections and assessments are not available.

Overall, Tom Hauk No.1 serves as a vital water management infrastructure in South Dakota, contributing to flood control and water storage in the region. Its low hazard potential and state regulatory oversight help ensure the safety and effectiveness of the dam in protecting surrounding communities and environments. As a noteworthy feature in the local water resource and climate landscape, Tom Hauk No.1 reflects the importance of maintaining and monitoring critical infrastructure for sustainable water management in the face of changing climate conditions.

Year Completed

1952

Dam Length

430

Dam Height

27

River Or Stream

TR MISSONot RatedI

Primary Dam Type

Earth

Hydraulic Height

27

Nid Storage

40

Hazard Potential

Low

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.