Lake Tonkawa Dam Reservoir Report
Nearby: Swan Lake Dam Kickapoo Lake Dam
Last Updated: December 5, 2025
Lake Tonkawa Dam, located in Normangee, Texas, is a captivating structure that serves as a vital source of recreation for water resource and climate enthusiasts.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1971, this earth dam stands at a height of 42 feet and has a structural height of 47 feet, with a length of 700 feet. The dam's primary purpose is recreation, with a storage capacity of 1900 acre-feet and a surface area of 75 acres.
Managed by the Texas Commission on Environmental Quality (TCEQ), Lake Tonkawa Dam has a spillway width of 155 feet and a maximum discharge of 2069 cubic feet per second. The dam underwent structural modifications in 2008, ensuring its continued functionality and safety. With a fair condition assessment as of March 2015, the dam presents a moderate risk level (3) but has not been assigned a hazard potential rating. Despite its risk level, Lake Tonkawa Dam remains a popular destination for outdoor activities, offering a picturesque setting for visitors to enjoy.
Years Modified |
2008 - Structural |
Year Completed |
1971 |
Dam Length |
700 |
Dam Height |
42 |
River Or Stream |
RUNNING CREEK |
Primary Dam Type |
Earth |
Surface Area |
75 |
Hydraulic Height |
42 |
Drainage Area |
2.45 |
Nid Storage |
1900 |
Structural Height |
47 |
Outlet Gates |
Uncontrolled - 3 |
Hazard Potential |
Not Available |
Foundations |
Soil |
Nid Height |
47 |
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.
Lake Tonkawa Dam