My $10 million estimate came from the approximate avg cost of a stocked adult trout including delivery being about $3 using round numbers. Even at $4 if inflation has really taken its toll over the past 10 yrs or so you’re looking at a $12.8 million price tag with a $93 million economic impact, which would still be a good cost/benefit ratio. Perhaps PSU considered the co-op fish as part of the cost. I did not since in my mind that is a separate program. Likewise, they may have considered the cost of the fingerling stocking program, which again is a separate program in my view. In reality, when most people talk about the trout stocking program in Pa, they are usually speaking about the 3.2 million state stocked adult trout.
As for the hellbenders, I am still not buying that argument entirely until it it is shown that there is a negative impact at the population level. That means a stream study. What the stocked trout in hellbender streams are really eating to my knowledge has not been answered. Likewise the estimated impact at the population level in such streams. As previously stated, what I have been told is the best hellbender research sampling site on Kettle Ck also happens to be one of the major stocking points for PFBC trout and club trout.
As for Chesapeake Logperch, to my knowledge there are no actual data on trout consuming C logperch, let alone a population impact. What we do know is that the best populations exist among Class C or Class B wild Brown Trout populations in unstocked streams. Furthermore, the way of describing the stocking that occurs in streams with C Logperch is that one population is within at least part of a stocked trout section. The other logperch populations are removed to well-removed from the stocked trout sections. In one case the distance is around 5 miles. In the other case, if it is the stream about which I am thinking, there was at least one intentional introduction of C Logperch into a stream where no natural population occurred. This suggests to me that the concern over trout being stocked in the stream’s tribs was minimal.