NEPA and ESA challenges to hatchery approvals after removal of the Elwha Dam were brought by anti-hatchery environmental groups. The unpublished decision is here.
Lower court materials here.
Here’s a news article on a recently completed study of a Nez Perce hatchery project. The results suggest that hatcheries may help restore natural runs in some cases, particularly when the genetics of the hatchery fish match those of local wild fish.