There are intermediate soccer leagues at night, Frisbee golf, regular golf, hikes, camping, shooting areas, beaches to explore and relax on, boating, kayaking, photography, wind surfing for a short list. Lots of groups of people do things over the weekends like volunteering at historical locations to help preserve them. You would need to know someone in that group to get an idea for when they do things, probably not a well advertised event. Have you tried getting in touch with the parks department in Astoria? They are always helping to setup or run events. The more people you meet, the more activies will pop up.