This report investigates the water quality of the Unuk River, a crucial waterway flowing from British Columbia into Alaska, over a two-year period. The study, conducted between 1991 and 1993, aims to identify long-term trends and provide recommendations for future monitoring. It utilizes extensive data on various physical and chemical parameters to assess the river's health, with a particular focus on substances that could impact its ecosystem and downstream users.

This technical report provides a detailed, data-driven assessment of the Unuk River's water quality. The extensive use of graphs and specific parameter tracking suggests a focus on empirical evidence and trend analysis. Its recommendations are likely aimed at environmental agencies and researchers involved in water resource management in the region. The document serves as a valuable record of the river's condition during the specified period.