The bad news is that Seattle has been destroyed and civilization is in ruins. The good news is that you've survived - and thanks to local artist Tony Dowler, you know where not to go in post-apocalyptic Seattle.
Tony has drawn the Seattle Doomsday Map (and a book called "Dee Dee's Doomsday Guide to Seattle"), in which he reimagined The Emerald City after the Apocalypse.
From Tony's Year of the Dungeon blog:
Post Seattle: South Lake Union
Wild dogs and dangerous vagrants here. even the good scrounge’s been picked over.
Some smart geeks’ve set up a pig farm on a rooftop, though. Use the shit to run their generators and grow things hydroponic style. If you send some useful scrap up to them, they might just send down some hothouse cabbages.
There's a scrounger's den on Denny street. Look for the yellow flags. Climb in the third basement window on the left and secure it behind yourself. If you take something from the stash make sure you leave something in return.
Post Seattle: Denny Hill
Lots of people in Denny, but they aren’t folk. A few rival gangs, so don’t get caught wearing the wrong color. I opt for black. Still, you can find copper wire, electronics, and supplies if you know where to look.
One of the gangs here has a secret stash of clean water and lords it over the rest of them. Another gang has a scrounge racket trading in working car batteries. Another one collects ears, so know who you’re dealing with.