This was our second trip to this park for hiking. We took the Blue Trail starting on the west side of the park, caught the short trip up to the scenic overlook (I think this was a Yellow trail), then followed the white trail at Denio Creek a short distance to the trailhead. I'm not sure how far this is, I can't find it marked anywhere on the map. When we were there in May we had to cross the river in knee deep water but this time the river was low so we walked across dry rocks.
We stopped for a quick picnic at the overlook. The hike up to the overlook was kind of steep, but not treacherous by any means. My kids are 5 and 10, and none of us had any trouble. It was worth the extra time to go to the overlook- it was really pretty. We also stopped one other time to let the kids play in the river.
We saw maybe 3 other families on the trail and there were a fair number of families playing in the river.