For hatchery salmon to be derived entirely from local stock would be the exception to the rule. The salmon hatchery on Soose Creek, tributary to the Green River, was one of the earliest Puget Sound (PS) hatcheries. It's broodstock was derived from local native fall Chinook and coho. When other hatcheries were built, the easiest way to obtain broodstock was to get a wet gunnysack of eyed eggs from Green River and drive them to the new hatchery. Obtaining local broodstock is time consuming, considering how much work is involved for the number of eggs obtained.

As a result, all hatchery fall Chinook in PS, including Hood Canal, are derived from Green River stock. Most PS hatchery coho are as well, but since a lot of hatcheries are located on tributary creeks, some local coho frequently became part of the mix of hatchery brood stock.

Broodstock exceptions are spring and summer Chinook in the Nooksack, Skagit, Stillaguamish, Skykomish, and White Rivers, where local native broodstock were utilized.

Chambers Creek and South Tacoma were the universal donor broodstock for all western WA hatchery winter steelhead, and Skamania (Washougal, Wind, and Klickitat) was the universal donor broodstock for summer steelhead until some more recent smaller local broodstock programs began.