Lost Lake Dam Reservoir Report
Nearby: French Lake Dam Osage Dam
Last Updated: December 26, 2025
Lost Lake Dam, located in Comanche, Oklahoma, along the WEST CACHE CREEK, was completed in 1926 by the City of Lawton and is currently owned and operated by the Fish and Wildlife Service.
°F
°F
mph
Wind
%
Humidity
Summary
This masonry dam stands at a height of 23 feet with a hydraulic height of 23 feet and a structural height of 25 feet, providing a normal storage capacity of 95 acre-feet for its primary purpose as a Fish and Wildlife Pond. With a low hazard potential and a poor condition assessment as of the last inspection in 2015, Lost Lake Dam is in need of maintenance and improvements to ensure its long-term safety and functionality.
The dam has a spillway width of 97 feet and an uncontrolled spillway type, with a maximum discharge capacity of 475 cubic feet per second. Despite its moderate risk rating, Lost Lake Dam has not undergone modifications in recent years and lacks an Emergency Action Plan (EAP) preparedness. The inspection frequency is set at 5 years, and the dam is monitored by the Fish and Wildlife Service, which also handles its design, construction, regulatory, inspection, and operational functions. The surrounding area boasts a surface area of 11.1 acres and a drainage area of 16.8 square miles, providing valuable habitat for local wildlife and recreational opportunities for visitors.
Lost Lake Dam serves as a vital resource for water management and conservation efforts in the region, supporting the ecological balance of the area and providing a habitat for various species. With its historical significance dating back to the early 20th century, the dam requires attention to ensure its continued functionality and safety for both wildlife and the community. As water resource and climate enthusiasts, understanding the importance of maintaining and improving dams like Lost Lake Dam is crucial for sustainable water management practices and environmental preservation in the face of changing climate conditions.
Year Completed |
1926 |
Dam Length |
155 |
Dam Height |
23 |
River Or Stream |
WEST CACHE CREEK |
Primary Dam Type |
Masonry |
Surface Area |
11.1 |
Hydraulic Height |
23 |
Drainage Area |
16.8 |
Nid Storage |
110 |
Structural Height |
25 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Foundations |
Rock |
Nid Height |
25 |
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.
Doris Camp
Doris Campground - Wichita Mts NWR
Lake Elmer Thomas Military - Fort Sill
Robinsons Landing - Lake Lawtonka
East Side - Lake Lawtonka
Lost Lake Dam
Lake Lawtonka Near Lawton