Well, nothing like showing up a little late to comment on a thread...
I haven't been around much lately. But if it helps, I have a note of excusal from my urologist, who insisted on taking my prostate out this past Summer. This was done on 7/1 and by 8/10, I was up wading the Milwaukee River for smallmouth. I could only last for a couple hours at a time, but I was by God there...:)
Watch for my upcoming dissertation in the AMA Journal on the impact of wading uneven substrate on post-prostatectomy stress incontinence. I found it to be significant...:)
Oh, I had my first post-op PSA in September and I am (as best they know) cancer free. This is good. It's why we pay Blue Cross.
Anyhow, I wanted to respond to Gonzo, who asked:
""I'm especially interested to learn whether any of the Erie streams have significantly better habitat for successful spawning than others. Do you have any thoughts, or have you seen any information about this?"
Years ago, when I was writing regularly for the Angler, I did a feature on Conneaut Creek. The Area 1 AFM at the time was Craig Billingsley and he basically told me that Conneaut was the only one of the tribs with any PA mileage (the top approx. 60% or so of the watershed before it veers west into Ohio) that turned any noticeable numbers of wild steelhead. He said they took a number of surveys in and above the approved trout waters section of Conneaut in Crawford County where they shocked up pretty fair numbers of wild steelhead.
He also said there was limited reproduction in Temple Run, a Conneaut trib that enters near Albion.
Elsewise, there is very little reproduction, even in the nursery streams like Trout and Godfrey Runs. As I understand it, there is a triple whammy at work in the watershed: 1) The mixing of strains (and hence their spawning timing) over the past 30-40 years. 2) The shale substrate of the majority of the watershed. It doesn't just fail to hold eggs, where it is fine enough to be similar to gravel, it moves precipitously with every significant high water event. 3) Groundwater recharge, while pretty good in very small spring tribs that run directly to the Lake (and upon which 3CU has built its raceways) is pretty poor in terms of contribution to virtually all the PA tribs. So, even in the event that some steelhead do successfully spawn in some of the (in particular) tribs of Elk, sustained flows are too erratic to get the fry through to swim up.
I think the whole thing is geological. If you look at a drainage map, the basin is very narrow except for the Conneaut Creek drainage which dips way south. Evidently it made a gap that allows it to headwater in an area where there is enough real gravel and sufficient groundwater recharge to allow some reproduction.
So, it will always be a Fritos fishery.
A couple of interesting things though about it all are that: 1) There are wild trout (and well established at that) in some of the small tribs of Elk and Walnut. But they are browns and they pre-date the catchable stocking switch from RT to BT that took place at least 30 years ago. My Dad grew up near a place on Walnut called Weis Library and at that time, there were wild brookies in Thomas Run, a Walnut Creek trib that enters slightly upstream from PA 832. This was in the 30's and 40's. 2) Immediately south of the drainage break are the headwaters of a couple of the most potent wild brown trout streams in NW PA with excellent flows and strong spring recharge. The headwaters of Elk Creek and the headwaters of one of these streams are about 100 yards apart along PA 86 south of Erie. This stream, back when they were sampling it (it is all posted now) routinely electrofished in the 90 to 110 kg/ha range. So, something pretty significant in geological/hydrological terms happens pretty abruptly here.
It's a strange place, but it's home...