Parwell Lake Reservoir Report
Nearby: Mccalla Tr Ranch Inc Oknoname 051007
Last Updated: December 29, 2025
Parwell Lake, located in Grady County, Oklahoma, is a privately owned earth dam with a height of 24 feet and a length of 330 feet.
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Summary
Completed in 1960, the dam has a storage capacity of 140 acre-feet and serves as a tributary of East Bitter Creek. The lake covers a surface area of 2 acres and is regulated by the Oklahoma Water Resources Board, with state permits and inspections in place to ensure its safety and compliance with regulations.
While Parwell Lake has a low hazard potential, it is considered to have a very high risk due to its location and structural characteristics. The dam features a controlled spillway with a width of 1 foot and is equipped with a single valve outlet gate. Although the condition of the dam is currently not rated, regular inspections are conducted every five years to monitor its integrity. The area is represented by Congressman Tom Cole and falls under the jurisdiction of the Tulsa District of the US Army Corps of Engineers.
With its scenic surroundings and important role in water resource management, Parwell Lake offers a valuable habitat for wildlife and recreational opportunities for visitors. As a key component of the local watershed, the lake plays a crucial role in regulating water flow and providing essential water storage for the region. Climate and water resource enthusiasts can appreciate the engineering and regulatory efforts that go into maintaining the safety and functionality of this important earth dam.
Year Completed |
1960 |
Dam Length |
330 |
Dam Height |
24 |
River Or Stream |
TRIBUTARY OF EAST BITTER CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
24 |
Nid Storage |
140 |
Structural Height |
24 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Washita River East Of Ninnekah
|
18cfs |
Washita River At Alex
|
234cfs |
North Criner Creek Near Criner
|
1cfs |
Canadian River At Norman
|
193cfs |
Walnut Creek At Purcell
|
29cfs |
Washita River At Anadarko
|
140cfs |
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.
Parwell Lake