This report was prepared to support planning by the Mushkegowuk Council and First Nations in the region in the context of ongoing and future environmental change, related to both climate change and development. The report aims to summarize the state of the knowledge across key components of watersheds, including landscape, climate, hydrology (water supply and flow), water quality, health of aquatic ecosystems. Across these sections, the text highlights what is known about recent changes and trends, and identifies areas where information seems (to the authors) inadequate for detecting the changes and impacts that may come about from changing climate and development. The summary is based on scientific publications, governmental reports, and indigenous publications complemented by traditional knowledge of the Territory’s watersheds (e.g., Litvinov studies). Consideration is also given to past and present land use activities and potential future threats facing the watersheds from projected climate change and proposed industrial developments. It is important to note that with the broad scope of the report, some topics fall outside the area of expertise of the authorship team. An attempt was made to incorporate the most up to date knowledge, but ongoing work is addressing gaps in the Territory even as this was written.