Snow water equivalent. The depth of water if a snow cover is completely melted, expressed in millimetres, on a corresponding horizontal surface area. (Colbeck, S., Akitaya, E., Armstrong, R., Gubler, H., Lafeuille, J., Lied, K., McClung, D. and Morris, E., 1990: The International Classification for Seasonal Snow on the Ground. International Commission on Snow and Ice (IAHS), World Data Center A for Glaciology, U. of Colorado, Boulder, CO, USA, 23 pp.)