Summary
Built in 1972 for irrigation purposes, this dam stands at a height of 27 feet with a hydraulic height of 25 feet and a structural height of 27 feet. It has a storage capacity of 160 acre-feet and covers a surface area of 20 acres. The dam has a controlled spillway with a width of 1 foot and features a valve outlet gate.
Despite being rated as having low hazard potential and not currently assessed for condition, Isom No 1 poses a very high risk, with a risk assessment rating of 1. The dam has not been modified in recent years and was last inspected in 1999, with an inspection frequency of every 5 years. It is regulated by the Oklahoma Water Resources Board (OWRB) and is under state jurisdiction for permitting, inspection, and enforcement.
Located on TR-J-N Cr river/stream, Isom No 1 is part of the Fort Worth District of the US Army Corps of Engineers. The dam is in a rural area with minimal associated structures, and its primary purpose remains focused on irrigation. With its rich history and continued relevance in water resource management, Isom No 1 serves as a vital infrastructure for sustainable agriculture in the region.
Year Completed |
1972 |
Dam Length |
860 |
Dam Height |
27 |
River Or Stream |
TR-J-N CR |
Primary Dam Type |
Earth |
Surface Area |
20 |
Hydraulic Height |
25 |
Nid Storage |
160 |
Structural Height |
27 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
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 1