Chelsea Reservoir No. 1 Reservoir Report
Last Updated: December 9, 2025
Chelsea Reservoir No.
°F
°F
mph
Wind
%
Humidity
Summary
1, located in Spencer Creek Cove Oologah, Oklahoma, is a vital water supply resource owned by the local government. Constructed in 1950 by USDA NRCS, this Earth dam stands at a height of 45 feet with a capacity to store 570 acre-feet of water. Its primary purpose is to provide water supply for the region, serving as a crucial source for the surrounding communities.
Managed by the OWRB and regulated by the state, Chelsea Reservoir No. 1 boasts a controlled spillway with a width of 1 foot, ensuring efficient water discharge when necessary. With a hazard potential rated as low and a risk assessment indicating a very high risk level, this reservoir is subject to regular inspections and maintenance to ensure its structural integrity and safety for the public. Despite its age, the dam remains in good condition, with a risk management plan in place to address any potential issues that may arise.
In the event of an emergency, Chelsea Reservoir No. 1 has one valve outlet gate for water release. With a surface area of 22 acres and a maximum discharge rate of 1500 cubic feet per second, this reservoir plays a crucial role in water management and conservation efforts in the region. As climate change continues to impact water resources, the importance of maintaining and safeguarding infrastructure like Chelsea Reservoir No. 1 becomes increasingly significant in ensuring a sustainable water supply for future generations.
Year Completed |
1950 |
Dam Length |
760 |
Dam Height |
45 |
River Or Stream |
SPENCER CREEK |
Primary Dam Type |
Earth |
Surface Area |
22 |
Hydraulic Height |
45 |
Nid Storage |
570 |
Structural Height |
45 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
45 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big Cabin Creek Near Big Cabin
|
51cfs |
Verdigris River Near Claremore
|
1770cfs |
Caney River Near Ramona
|
59cfs |
Verdigris River Near Lenapah
|
804cfs |
Neosho River Near Langley
|
919cfs |
Neosho River Near Chouteau
|
358cfs |
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.
Chelsea Reservoir No. 1