Summary
Constructed in 1990 by the USDA NRCS, this structure stands at 27 feet tall and has a storage capacity of 182 acre-feet. With a low hazard potential and a very high risk assessment rating, this dam is regulated by the Oklahoma Water Resources Board and undergoes regular inspections, with the last one conducted in July 2011.
Owned by a private entity, Allen Janzen serves a primary purpose of "Other" and is classified as an earth dam with stone core and soil foundation. It features a controlled spillway with a width of 1 foot and an outlet gate consisting of a single valve. The dam's drainage area is 1.7 square miles, with a maximum discharge capacity of 781 cubic feet per second. Despite not being rated for condition assessment, the dam is subject to an inspection frequency of every 5 years to ensure its structural integrity and safety.
Located within the Tulsa District of the US Army Corps of Engineers, Allen Janzen plays a crucial role in water resource management in the region. With its strategic positioning along Deer Creek, this dam contributes to flood control and water supply for the surrounding areas. As a significant infrastructure project designed by the Natural Resources Conservation Service, Allen Janzen showcases the importance of sustainable water management practices in the face of climate change and increasing water demand.
Year Completed |
1990 |
Dam Length |
60 |
Dam Height |
27 |
River Or Stream |
DEER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
27 |
Drainage Area |
1.7 |
Nid Storage |
182 |
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.
Allen Janzen