Lost is a federal-owned dam located in Johnston County, Oklahoma, near Lake Texoma.
Wind
Humidity
Built in 1959, Lost serves the primary purpose of flood risk reduction along the TR-Washita River. This earth dam stands at a height of 20 feet and has a storage capacity of 50 acre-feet, with a normal storage level of 30 acre-feet. Despite being rated as having a low hazard potential, Lost is considered to have a very high risk assessment score of 1.
The dam features a controlled spillway and a single valve outlet gate. Although Lost has not been inspected since 1980, it is designated for inspection every 5 years. The condition assessment is marked as "Not Rated," and there is no emergency action plan (EAP) in place. Additionally, the risk management measures for Lost are currently unspecified, indicating potential vulnerabilities in the event of a disaster. Despite these factors, Lost remains a critical infrastructure for flood control in the region, highlighting the importance of ongoing monitoring and maintenance efforts to ensure its safety and functionality.
Year Completed |
1959 |
Dam Length |
505 |
Dam Height |
20 |
River Or Stream |
TR-WASHITA RIVER |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
20 |
Nid Storage |
50 |
Structural Height |
20 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Pennington Creek Near Reagan
|
7cfs |
Blue River Near Connerville
|
54cfs |
Washita River Near Dickson
|
322cfs |
Red River At Denison Dam Nr Denison
|
238cfs |
Clear Boggy Creek Near Caney
|
423cfs |
Rock Creek At Sulphur
|
8cfs |