Pedeliski Dam; Georgian Reservoir Report

Last Updated: December 6, 2025

Pedeliski Dam, also known as Wetland No 2, is a privately owned structure located in Billings, North Dakota.


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Summary

Built in 2005 by the USFWS, this earth dam serves multiple purposes including fire protection, stock, and a small fish pond. With a height of 12.1 feet and a storage capacity of 73.2 acre-feet, it plays a crucial role in managing water resources in the area.

The dam, situated on the South Branch Green River-TR, is regulated by the North Dakota State Water Commission and undergoes regular inspections and enforcement procedures. With a spillway width of 53 feet and a low hazard potential, Pedeliski Dam presents a moderate risk level. Although the structure has not been rated for its condition assessment, it continues to serve its intended purposes effectively while contributing to the overall water management efforts in the region.

Overall, Pedeliski Dam stands as a significant asset in the water infrastructure of North Dakota, providing essential services for fire protection, livestock, and aquatic habitats. As climate and water resource enthusiasts, the engineering details and regulatory framework surrounding this dam offer insights into the complexities of managing water resources and mitigating risks associated with dam structures.

Year Completed

2005

Dam Height

12.1

River Or Stream

SOUTH BRANCH GREEN RIVER-TR

Primary Dam Type

Earth

Surface Area

8

Drainage Area

0.69

Nid Storage

73.2

Outlet Gates

None

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.