Weder No 1 Reservoir Report

Last Updated: December 5, 2025

Weder No 1 is a private-owned earth dam located in Bryan County, Oklahoma, specifically in the city of Mead.


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Summary

Built in 1973 by USDA NRCS, this dam serves primarily for irrigation purposes on the TR-NEWBERRY CR river. With a height of 26 feet and a storage capacity of 85 acre-feet, Weder No 1 plays a crucial role in water resource management in the area.

Managed by the Oklahoma Water Resources Board (OWRB), Weder No 1 is regulated, inspected, and enforced by state authorities to ensure its structural integrity and safety. Despite being classified as a low hazard potential structure, the risk assessment for Weder No 1 indicates a very high risk level, emphasizing the importance of regular inspections and maintenance. The dam features a controlled spillway and a single valve outlet gate for water release.

As a key component of the local water infrastructure, Weder No 1 is essential for supporting agricultural activities in the region. With its stone core and soil foundation, this earth dam stands as a testament to effective water management practices. Ensuring the proper functioning and safety of Weder No 1 is crucial for maintaining a sustainable and reliable water supply for irrigation purposes in Bryan County, Oklahoma.

Year Completed

1973

Dam Length

500

Dam Height

26

River Or Stream

TR-NEWBERRY CR

Primary Dam Type

Earth

Hydraulic Height

23

Nid Storage

85

Structural Height

26

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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.