Lylas,
I have vague recollections of the Ouseburn having been stocked with roach by the EA (or possibly even the NRA) in the nineties. This species would, I guess, be more tolerant of low dissolved oxygen content than the trout, but would be equally dependent on a viable invertebrate population in the stream. Unfortunately, as I again only vaguely remember, this project came to an untimely end due to a pollution incident before the fish had become established. I expect the industry and population in the catchment -which now includes the Great Park- is a constant threat to the Ouseburn.
Have you considered contacting the EA (not in a regulatory capacity, as I’m sure that’s a bridge that has to be crossed anyway), as there are [at least] three fisheries scientists, based at Tyneside House on Skinnerburn Road in Newcastle, that might be a good sounding board for your proposal. They might also have info on what stockings, etc., the Ouseburn has received in the past and its current water quality status.
The other organisation that I’m sure would be interested would be the
Tyne Rivers Trust.
W_n_d
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