Eastwood Lewis Reservoir Report
Nearby: Currie Foster Talmadge
Last Updated: December 5, 2025
Eastwood Lewis is a privately owned dam located in Bryan, Oklahoma, specifically in the city of ORD.
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Summary
Completed in 1979, this earth dam stands at a height of 30 feet and has a hydraulic height of 15 feet, with a length of 600 feet. Its primary purpose is stated as "Other", with a low hazard potential and a very high risk assessment rating. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and has state permitting, inspection, and enforcement in place.
Situated on the TR-WHITEGRASS CREEK, Eastwood Lewis has a storage capacity of 60 acre-feet and a maximum discharge of 1228 cubic feet per second. The dam features a controlled spillway with a width of 1 foot and an outlet gate of valve type. While the dam's condition assessment is listed as "Not Rated", it undergoes inspections every 5 years, with the last inspection conducted in October 2009. The dam's associated structures include stone core and soil foundations, with a very limited risk management measures currently in place.
For water resource and climate enthusiasts, Eastwood Lewis presents an intriguing case study in dam infrastructure and risk management practices. With its unique characteristics and location in Oklahoma, this dam serves as a focal point for understanding the complexities of maintaining and regulating water resources in the face of climate change impacts. As a privately owned structure, Eastwood Lewis highlights the importance of collaboration between private owners, state agencies, and federal authorities in ensuring the safety and sustainability of water infrastructure in the region.
Year Completed |
1979 |
Dam Length |
600 |
Dam Height |
30 |
River Or Stream |
TR-WHITEGRASS CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
60 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
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Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Eastwood Lewis