Pennsylvania Glass Sand Corp Reservoir Report
Nearby: Scs-Mill Creek Site-12 Settling Ponds
Last Updated: December 19, 2025
Pennsylvania Glass Sand Corp, also known as Basin #3, is a privately-owned facility located in Johnston, Oklahoma.
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Summary
The dam, primarily used for purposes other than water retention, was completed in 1983 and stands at a height of 48 feet. This earth-type dam with a stone core is regulated by the Oklahoma Water Resources Board and undergoes regular inspections to ensure its structural integrity.
The dam has a storage capacity of 1550 acre-feet and a surface area of 750 acres, with a controlled spillway measuring 4 feet wide. Despite being classified as having a low hazard potential, the risk assessment for the facility is rated as very high (1), indicating the need for stringent risk management measures. The last inspection was conducted in December 2015, with a satisfactory condition assessment reported.
Located on TR-MILL CR, the Pennsylvania Glass Sand Corp facility is situated in a critical area for water resource management in Oklahoma. With its strategic location and importance for the region, the dam serves as a vital infrastructure for maintaining water supply and managing potential climate-related challenges. The facility's risk assessment underscores the importance of ongoing monitoring and maintenance to ensure the safety and sustainability of the water resources it protects.
Year Completed |
1983 |
Dam Height |
48 |
River Or Stream |
TR-MILL CR |
Primary Dam Type |
Earth |
Surface Area |
750 |
Hydraulic Height |
48 |
Nid Storage |
1550 |
Structural Height |
48 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
48 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rock Creek At Sulphur
|
8cfs |
Pennington Creek Near Reagan
|
57cfs |
Blue River Near Connerville
|
49cfs |
Washita River Near Dickson
|
319cfs |
Washita River Near Pauls Valley
|
327cfs |
Little River Near Sasakwa
|
9cfs |
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.
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Pennsylvania Glass Sand Corp