Spillway Dam, also known as Bull Run Reservoir No.
Wind
Humidity
2 Spillway Crest, is a vital water resource infrastructure located in Troutdale, Oregon. Designed by Steven & Thompson of Portland, OR, and completed in 1962, this earth dam stands at a towering height of 180 feet and serves primarily for water supply purposes. With a storage capacity of 25,000 acre-feet, the dam plays a crucial role in providing a reliable water source for the surrounding area.
Situated on the Bull Run River, the dam has a maximum discharge capacity of 73,000 cubic feet per second and features an uncontrolled spillway with a width of 450 feet. The dam's hazard potential is categorized as high, and it is under the regulatory oversight of the Federal Energy Regulatory Commission, ensuring its safe operation and maintenance. Despite its age, the dam's risk assessment is moderate, with no documented condition assessment available.
Overall, Spillway Dam stands as a key component of Oregon's water supply infrastructure, contributing to the region's hydroelectric power generation and water storage capacity. Its strategic location, impressive dimensions, and critical role in water management make it a significant asset for water resource and climate enthusiasts interested in sustainable water infrastructure development and management.
Year Completed |
1962 |
Dam Length |
450 |
Dam Height |
180 |
River Or Stream |
Bull Run |
Primary Dam Type |
Earth |
Surface Area |
418 |
Hydraulic Height |
20 |
Drainage Area |
102 |
Nid Storage |
25000 |
Structural Height |
20 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
180 |
Bull Run River Near Bull Run
|
1960cfs |
South Fork Bull Run River Near Bull Run
|
256cfs |
Little Sandy River Near Bull Run
|
312cfs |
Sandy River Near Marmot
|
2580cfs |
Sandy River Blw Bull Run River
|
5440cfs |
North Fork Bull Run River Near Multnomah Falls
|
155cfs |
| Location | Reservations | Toilets |
|---|---|---|
Oxbow Regional Park
|
||
Ainsworth Campground
|
||
Ainsworth State Park
|