H C Groendyke #2 Reservoir Report
Last Updated: December 5, 2025
H C Groendyke #2 is a private earth dam located in Blaine, Oklahoma, with a primary purpose of debris control.
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Summary
Built in 1974 by the USDA NRCS, this dam stands at a height of 32 feet and spans 240 feet in length. With a storage capacity of 69 acre-feet and a surface area of 6 acres, this structure plays a crucial role in managing water resources in the area.
Despite being categorized as low hazard potential and having a moderate risk assessment rating, H C Groendyke #2 has not undergone a condition assessment and is not currently rated for its condition. The dam features an uncontrolled spillway with a width of 15 feet and serves additional purposes such as fish and wildlife pond creation and recreation. It is situated within the Tulsa District and falls under the jurisdiction of the state of Oklahoma.
With its strategic location and multifaceted functionality, H C Groendyke #2 serves as a key component in water management efforts in Blaine County. As a vital resource for debris control and recreational activities, this earth dam stands as a testament to the collaborative efforts between private owners and government agencies in ensuring sustainable water resource management in Oklahoma.
Year Completed |
1974 |
Dam Length |
240 |
Dam Height |
32 |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
32 |
Drainage Area |
0.12 |
Nid Storage |
69 |
Hazard Potential |
Low |
Nid Height |
32 |
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.
H C Groendyke #2