Oknoname 30174 Reservoir Report
Nearby: Oknoname 30142 Spur Ranch
Last Updated: December 16, 2025
Oknoname 30174 is a privately owned earth dam located in Nowata, Oklahoma with a primary purpose of water supply.
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Summary
Built in 2006 by USDA NRCS, the dam stands at a height of 28 feet and has a storage capacity of 143 acre-feet. Situated on the Big Creek river, the dam serves as a vital resource for the surrounding area, with a normal storage capacity of 60 acre-feet and a surface area of 7.8 acres.
Despite its relatively low hazard potential, the dam is classified as having a very high risk due to its location and the potential impact of a breach. The controlled spillway and single valve outlet gate help regulate water flow and prevent overflow during periods of heavy rainfall. Although the dam has not been rated for its condition, regular inspections are conducted to ensure its structural integrity and safety.
Managed by the OWRB and regulated by the state of Oklahoma, Oknoname 30174 plays a crucial role in water resource management in the region. With a drainage area of 348 acres and a maximum discharge rate of 0.1 cubic feet per second, the dam serves as a key infrastructure for water supply and flood control on Big Creek, contributing to the overall resilience of the local ecosystem in the face of changing climate patterns.
Year Completed |
2006 |
Dam Length |
600 |
Dam Height |
28 |
River Or Stream |
BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
7.8 |
Hydraulic Height |
19 |
Drainage Area |
348 |
Nid Storage |
143 |
Structural Height |
25.1 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
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.
Oknoname 30174