1. Hydro., Cooperative Res. Ctr. for Catchment Hydrol., Commonwealth Scientific and Industrial Res. Org. Div. of Land and Water, GPO Box 1666, Canberra, ACT, 2601, Australia; formerly, Dept. of Civ. Engrg., Monash Univ., Clayton, Victoria, 3145, Australia. E-mail: Mathew. Gilfedder@crb.clw.csiro.au
2. Dir., Cooperative Res. Ctr. for Catchment Hydro., Dept. of Civ. Engrg., Monash Univ., Clayton, Victoria, 3145, Australia.
3. Sr. Lect., Dept. of Geological Sci., Univ. Coll. London, Gower St., London WC1E 6BT, U.K.