Address: 44930 Quartzville Dr, Foster, OR 97345
Website: https://linnparks.com/parks/sunnyside/
Sunnyside Off-Leash Dog Park in Foster, Oregon, has a large area with shade trees and water fountains for dogs to cool down. The park is well-kept and has double gates. There is plenty of space for dogs to run and play. Most visitors enjoy the park and its facilities. However, some have mentioned worries about aggressive dogs and the water not always being available in certain seasons.