The western pheasant release program at Shillapoo is essentially the same as Skagit from what I understand. You can download a PDF of the program, release sites and dates off WDFW's website. As I recall it opens to the general public in early October.
Here is the link to the download page. (left side)
http://www.wa.gov/wdfw/wlm/game/water/wwapheas.htm
They are also released at Vancouver Lake. Be sure to check out the maps in the above document.
Welcome to the area. You can also get in on the OR fee pheasant hunt at Sauvie which is open and runs through Oct 5. Non resident license and tags are about $75 (license and bird validation) and the fee pheasant tag is $11.50 and good for two birds/per tag or day. No limit on the the number of tags that can be filled during the season. Check out the OR Game Bird Regs from ODFW at:
http://www.dfw.state.or.us/ODFWhtml/...ions/regs.html
Good Luck.