The Center for Biological Diversity Lawsuit against the DFG some years back is the primary reason for lack of trout plants in the state. That's why Coyote is no longer stocked, for example.
The compounding factor is that certain water districts like Santa Clara County don't particularly give a rip if trout are ever stocked in those lakes again. So they do nothing, or do it very slowly, when it comes to doing the necessary assessments to have the lakes approved for stocking. Everything I've heard and seen indicates that the Santa Clara County water district in particular does not care for recreation on their lakes at all. It would be much more convenient to them to close the lakes altogether.
Other water and park districts have made big efforts to do the assessments and get trout stocked again. Example: East Bay Regional Parks doing the assessments to have places like Del Valle stocked.
The inconsistency with which assessments have been done is an embarrassment to the state and it's anglers. The public's opportunity to catch stocked trout should not depend on the individual whims of water boards, parks districts and county officials. But right now today it does.
They have the power because DFG doesn't have the resources or care to allocate the resources to make the assessments happen. Thank you Santa Clara County Water District. Thank you Center for Biological Diversity.