The effects of the Kielder scheme on fisheries

The scheme is briefly described. The success of the Kielder and Bakethin reservoir fisheries is examined. The poor condition of trout in Kielder reservoir is considered in relation to physical and chemical factors including water turbidity, low nutrient levels and the location of the reservoirs. The performance of Kielder hatchery and the difficulties of collecting broodstock of Tyne origin are described. The effects of water releases from Kielder reservoir upon the salmon, Salmo salar L., and brown trout Salmo trutta L., fisheries within the River North Tyne and examined. Aspects considered include modified water temperature regimes, water chemistry and the magnitude and timing of releases for river regulation and generation of hydroelectric power. The problems associated with fish passage at Riding Mill weir, the point of water transfer to the River Wear and River Tees, are examined and the progress of inter‐river transfers is described.