Through Sunday, myEZdeal is offering four Big Surf open swim tickets to North Clackamas Aquatic Park for just $15 (valued at $39.95). In addition to the sweet Big Surf section, the Aquatic Park has a fun toddler/preschool area.
There is no limit to how many sets you can purchase. Passes expire February 2011.
This post may contain affiliate links. See the disclosure policy for more information.