The Canada Centre for Inland Waters (COW) at Burlington, Ontario, one of the principal Canadian agencies involved in the Field Year, has compiled a summary of activities and resources which it is prepared to commit to IFYGL core programs. The Inland Waters Branch has recently redefined its priorities in the light of national needs in Canada. Water quality problems have been given highest priority and water quantity problems, including ice, waves, etc., have been made third priority. In our view, much of the IFYGL circulation, water movement, and energy budget programs will make direct contributions to understanding of diffusion and assimilation of waste inputs, including heated inputs, to Lake Ontario, and thus falls into the highest priority category. The following statement of our willingness and ability to support various IFYGL projects is in line with this interpretation of these priorities.