The 2017 Alberta-NWT Transboundary Water Quantity Technical Report provides an overview of 2017 water quantity data in the Hay and Slave River basins. Total annual streamflow in the Slave River in 2017 was slightly above average (105% of normal) while total annual flow in the Hay River was lower than average (46% of normal). On the Slave River annual consumptive use was well below 2 billion m3 , at 1.03 billion m3 . The pre-defined threshold of 2 billion m3 remained at 1.9% of the long term mean annual streamflow. On the Hay River, the total volume of groundwater and surface water licences exceeded 2.5% of the natural flows at the border in November, December, February, and March. This exceeded Trigger 1 and prompted analysis of Trigger 2. Actual water use was less than 1% of the natural flow at the border in all months, which was lower than the Trigger 2 threshold of 4% and also lower than the interim objective of 5%.