Isom No 3 Reservoir Report
Nearby: Isom No 1 Farrell Lake
Last Updated: December 5, 2025
Isom No 3 is a privately owned earth dam located in Bryan County, Oklahoma, specifically in the city of Burris Cemetery.
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Summary
Built in 1968 for irrigation purposes, this dam stands at a height of 20 feet with a hydraulic height of 18 feet and a length of 1040 feet. It has a storage capacity of 150 acre-feet, with a normal storage level of 110 acre-feet and a surface area of 19 acres.
Although rated as having a low hazard potential, Isom No 3 is subject to state regulation and inspection by the OWRB. The dam features a controlled spillway and one outlet gate, with the last inspection taking place in September 1999. Despite not being condition-rated, the dam's risk assessment is categorized as very high, emphasizing the importance of ongoing risk management measures.
This dam plays a crucial role in providing water for irrigation in the region, highlighting the intersection of water resource management and climate considerations. With its strategic location along TR-J-N CR, Isom No 3 serves as a key infrastructure asset for water management in Bryan County, Oklahoma.
Year Completed |
1968 |
Dam Length |
1040 |
Dam Height |
20 |
River Or Stream |
TR-J-N CR |
Primary Dam Type |
Earth |
Surface Area |
19 |
Hydraulic Height |
18 |
Nid Storage |
150 |
Structural Height |
20 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Isom No 3