Audubon Nwr-Impoundment#2 Reservoir Report

Last Updated: December 14, 2025

Audubon Nwr-Impoundment#2 is a federally owned structure located in McLean, North Dakota, specifically in the city of N.


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Summary

Managed by the USFWS, this fish and wildlife pond was completed in 1979 with a dam height of 13 feet and a storage capacity of 450 acre-feet. The primary purpose of this earth dam is to provide habitat for various species of fish and wildlife in the area, making it a vital resource for conservation efforts in North Dakota.

With a surface area of 110 acres, Audubon Nwr-Impoundment#2 plays a crucial role in maintaining the ecological balance of Lake Audubon-TR. Despite its low hazard potential, the structure is regulated by the NDSWC and undergoes regular inspections and enforcement measures to ensure its integrity and safety. While the dam does not have a spillway, its risk assessment still highlights a high risk (2), indicating the importance of proper management and maintenance to prevent any potential hazards.

As a key component of the St. Paul District, Audubon Nwr-Impoundment#2 stands as a testament to the commitment of federal agencies towards wildlife conservation and environmental protection. With its strategic location and purposeful design, this structure serves as a valuable asset for water resource and climate enthusiasts, offering a glimpse into the intersection of sustainable infrastructure and biodiversity preservation in North Dakota.

Year Completed

1979

Dam Length

650

Dam Height

13

River Or Stream

LAKE AUDUBON-TR

Primary Dam Type

Earth

Surface Area

110

Nid Storage

450

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

13
       
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.