The population of the Greater Vancouver area continues to grow and Metro Vancouver is taking a proactive step by assessing future water needs and water resources. As part of this work, NHC developed hydrologic watershed models of the Capilano, Seymour, and Coquitlam watersheds, which were used to simulate projected monthly inflows for the three watersheds’ reservoirs and subalpine lakes (Palisade, Burwell, and Loch Lomond). Simulations were driven by the Pacific Climate Impact Consortium’s downscaled climate scenarios for the region up to 2100. The simulated projected inflows are currently being used by Metro Vancouver to assess projected water supply versus future needs, including an assessment of additional water sources. These watershed models are also ready to be implemented as operational or forecast models.