Hanawalt Reservoir Report
Nearby: Bachman Mckean Frank
Last Updated: December 10, 2025
Hanawalt is a private dam located in Roger Mills, Oklahoma, specifically in the city of Trail.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1965, this earth dam stands at a height of 25 feet and has a hydraulic height of 22 feet, serving as a vital structure along the TR-Canadian River. With a storage capacity of 60 acre-feet and a surface area of 7 acres, Hanawalt plays a crucial role in managing water resources in the region.
Although the condition assessment of Hanawalt is listed as "Not Rated," its hazard potential is deemed "Undetermined" with a very high risk level of 1. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and undergoes regular state inspections, permitting, and enforcement to ensure its structural integrity and safety. The spillway system is controlled, with a width of 1 foot, and the dam features a valve outlet gate for water release when necessary.
Enthusiasts of water resources and climate in Oklahoma can appreciate Hanawalt for its contribution to water management and flood control in the region. With its firm regulatory oversight and high-risk assessment, this earth dam stands as a testament to the importance of infrastructure in safeguarding communities and ecosystems against water-related hazards.
Year Completed |
1965 |
Dam Length |
400 |
Dam Height |
25 |
River Or Stream |
TR-CANADIAN RIVER |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
22 |
Nid Storage |
60 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Undetermined |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Cheyenne
|
9cfs |
Canadian Rv Nr Canadian
|
45cfs |
Sweetwater Ck Nr Kelton
|
3cfs |
Wolf Ck At Lipscomb
|
0cfs |
Sweetwater Creek Near Sweetwater
|
14cfs |
Washita River Near Hammon
|
12cfs |
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.
Hanawalt