Historical water quality data presented for the Skeena River watershed are divided into nine subsequent sections, corresponding to the nine major watershed reaches. Each section is divided into 6 subsections: hydrology, land use history, water withdrawals, water quality and aquatic research, liquid waste discharges, and a summary and review of monitoring needs. Parameters and datasets which are critical in the assessment of long-term and/or cumulative impacts from proposed development are identified. Additional water quality information needs in critical geographical areas are described. Report published October 1996.