Within the next two years, there will be a reduction in many of the (state, federal, and tribal) tributary hatchery programs across the Upper Columbia. The reduction is expected to reduce density-dependent effects on salmon and increase efficacy of adult management actions.  The primary driver in the reduction is the recalculation of mitigation requirements for the PUDs.  Reform objectives are to reduce proportions of hatchery fish on the spawning grounds and increase productivity and growth rates of wild fish. See the following tables provided by Washington Department of Fish and Wildlife that identify some of the changes occurring region wide (please note the numbers in the tables may change):