The Great Depression Dam, also known as Over The Ridge Dam, is a privately owned structure located in Chelan, Washington.
Wind
Humidity
Completed in 1998, this earth dam serves the primary purpose of irrigation for agriculture in the region. With a height of 22 feet and a storage capacity of 32 acre-feet, it plays a crucial role in managing water resources in the area.
Managed by the Washington Department of Ecology, the Great Depression Dam is regulated, inspected, and enforced by state agencies to ensure its safety and functionality. Although it has a fair condition assessment, it is classified as a high hazard potential structure. With a drainage area of 0.06 square miles and a maximum discharge of 202 cubic feet per second, the dam plays a significant role in controlling water flow and providing essential water resources for the surrounding area.
Despite its small size, the Great Depression Dam plays a vital role in water resource management in the region. With its location on Squilchuck Creek and its contribution to irrigation needs, this structure showcases the importance of privately owned dams in supporting agricultural activities and water availability in Washington state.
Year Completed |
1998 |
River Or Stream |
Squilchuck Creek - Offstream |
Primary Dam Type |
Earth |
Surface Area |
2.46 |
Hydraulic Height |
22 |
Drainage Area |
0.06 |
Nid Storage |
32 |
Structural Height |
22 |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
22 |
Wenatchee River At Monitor
|
12000cfs |
Wenatchee River At Peshastin
|
11200cfs |
Entiat River Near Entiat
|
1050cfs |
Icicle Creek Above Snow Creek Near Leavenworth
|
1750cfs |
Mad River At Ardenvoir
|
197cfs |
Yakima River At Umtanum
|
4720cfs |
| Location | Reservations | Toilets |
|---|---|---|
Squilchuck State Park Campground
|
||
Wenatchee Confluence State Park
|
||
Wenatchee River County Park
|
||
Tronsen
|