----------------------------Original message---------------------------- Hi Folks, A student of mine is undertaking a dissertation on the hydrological impact of the Mount St Helens eruption, specifically in the area depicted below: MOUNT ST HELENS (Summit) LONGVIEW SWIFT RESERVOIR LAKE MERWIN She wonders whether any digital data covering the post-eruption hydrology is available, especially data that she might download and manipulate herself. Many thanks in anticipation, Nick Millea Map Curator, Bodleian Library, Oxford, UK. tel +44 865 277013; fax +44 865 277182; email [log in to unmask]