East Broadway Dam Reservoir Report

Last Updated: December 7, 2025

East Broadway Dam, located in Dickinson, North Dakota, is a masonry structure built in 1937 by the Works Progress Administration (WPA) with a height of 12 feet and a length of 125 feet.


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Summary

The dam, situated on the Heart River, serves as a vital water supply source for the region, providing a storage capacity of 52.8 acre-feet and covering a surface area of 6 acres. Despite its age, the dam has undergone structural modifications in 1974 and 1986 to ensure its continued functionality.

Managed by the North Dakota State Water Commission (NDSWC), East Broadway Dam is regulated, permitted, inspected, and enforced by the state, demonstrating a commitment to safety and compliance with regulations. The dam's low hazard potential is complemented by a moderate risk assessment rating, indicating a proactive approach to risk management. The presence of an uncontrolled spillway with a width of 125 feet and a single slide gate for outlet control further enhances the dam's operational efficiency and safety measures.

The dam's historical significance, combined with its ongoing maintenance and regulatory oversight, underscores its importance in ensuring water supply reliability for the local community. As a key infrastructure asset in Stark County, East Broadway Dam serves as a testament to the collaboration between local government entities and federal agencies in safeguarding water resources and enhancing climate resilience in the region.

Years Modified

1974 - Structural, 1986 - Structural

Year Completed

1937

Dam Length

125

Dam Height

12

River Or Stream

HEART RIVER

Primary Dam Type

Masonry

Surface Area

6

Drainage Area

440

Nid Storage

52.8

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Low

Foundations

Soil

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.