Surprisingly, some small tourist haunts near Portland are shut down until the Federal Government becomes fully operational again. When thinking about the National Park Service, the only park in Oregon that comes to mind immediately is Crater Lake.
Unfortunately however, The Columbia Gorge is now a National Scenic Area. That means that the Multnomah Falls Visitor's Center is closed and no Park Ranger is available for questions. Also, Eagle Creek is just starting its migrating salmon season and there are signs saying that the recreation area is closed. The water is still running in the stream, so there are still people stopping to look at the fish. The bathrooms are closed though and you can't buy a Forest Pass at the Trail-head either.
Fortunately if you wish to camp, you could camp at the Port of Cascade Locks. It appears to be geared toward RV camping, but you could probably call and ask about tent camping.
And if you're really interested in pulling out all the stops, The National Geographic has a touring ship that passes through the Columbia Gorge. Who knew? It looks like the next trip begins October 14th and has an environmentally conscious chef on board. He was appointed by Hillary Clinton to the United States Ambassador Corp.
In any case, there's still plenty to do in the Columbia Gorge and they;re still serving up some fine ice cream at The East Wind Drive In.