Don Fishery Management Plan - RAFTS

Adjacent to the Don catchment, but not flowing into it, are a series of three lochs, Corby,Lily and Bishop’s Lochs, which are designated as SSSIs for their non-breeding coloniesof greylag geese and for the mesotrophic status of the lochs.Historical land use pressures on the catchment have included a variety of industries at thestart of the twentieth century whose pollution, abstraction and obstruction greatly affectedthe salmon fishing on the river (Calderwood, 1909; DDCT, 2008 and references therein).In the last thirty years cumulative pollution from a number of sources caused thecondition “Pigmented salmon syndrome”, resulting in the death of large numbers ofsalmon over the winter of 1981/1982. Once the cause was established appropriate controlmeasures were applied and no further cases have been reported since 1988 (DDCT, 2008and references therein).6