Elmer Dam, located in La Center, Washington, is a privately owned structure primarily used for irrigation purposes.
Wind
Humidity
Completed in 1958, this earth dam stands at a height of 16 feet and spans a length of 760 feet. It holds a maximum storage capacity of 38 acre-feet and covers a surface area of 18 acres, serving the surrounding area with water from Tr-Mason Creek.
Managed by the Washington Department of Ecology, Elmer Dam is regulated, inspected, and enforced to ensure its safety and functionality. Despite being classified as a high hazard potential structure, the dam's condition assessment in August 2020 deemed it to be satisfactory. With a hazard potential classification of high, the dam's emergency action plan and risk management measures play a crucial role in ensuring the safety of the surrounding community in the event of a potential breach.
As a key component of the water resource infrastructure in Clark County, Washington, Elmer Dam remains a vital resource for irrigation and water management in the region. With its strategic location and efficient design, the dam continues to play a critical role in supporting agricultural activities and ensuring water availability for the local community.
Year Completed |
1958 |
Dam Length |
760 |
River Or Stream |
Tr-Mason Creek |
Primary Dam Type |
Earth |
Surface Area |
18 |
Hydraulic Height |
16 |
Drainage Area |
0.05 |
Nid Storage |
38 |
Structural Height |
16 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
16 |
Lewis River At Ariel
|
23800cfs |
East Fork Lewis River Near Heisson
|
2980cfs |
Canyon Creek Near Amboy
|
1340cfs |
Speelyai Creek Near Cougar
|
14cfs |
Burnt Bridge Creek Near Mouth At Vancouver
|
37cfs |
Columbia Slough At Portland
|
5cfs |