Spillway Park is located on Lake Umatilla just downstream of McNary Lock and Dam in eastern Oregon on the Mid-Columbia River.
The park provides two overlooks to watch McNary Dam, a volleyball court and access to the McNary Dam Wildlife Area trail system.
Spillway Park offers one day-use group shelter with eight tables and two fire grills.
The park is situated along the bank of the Columbia River. Day users can enjoy the relaxing shade as they get a beautiful look at McNary Dam.
The Pacific Salmon Visitor Center, Oregon Fish Viewing Room and the McNary Dam Wildlife Area with its beautiful natural trails are all in close proximity to Spillway Park.