Here's an article that mentions Smith Creek and a hatchery. Also mentions hatchery plants.

http://www.gameandfishmag.com/fishing/fishing_salmon-steelhead-fishing_wo_0109_01/

..and some other links...

https://wdfw.wa.gov/lands/water_access/30415/

https://fortress.wa.gov/dfw/score/score/..._Pacific_County

..and a reference to a fishway on a dam on Smith Creek from 1920 and an oblique reference to a hatchery on the Chinook River in Pacific County...

https://books.google.com/books?id=Gw-0Tr...ery&f=false

...and lastly, a WRIA report from the 1970s on the Willapa Basin. A lot of historical information and a good write-up on Smith Creek. No mention of a hatchery, though, on Smith Creek.

http://docs.streamnetlibrary.org/Washington/DFW/StreamCatalog/24-WRIA.pdf