https://www.sciencedaily.com/releases/2003/09/030930060036.htm
Envisat Radar Altimetry Tracks River Levels Worldwide | ScienceDaily
Next week ESA previews a new product range called River and Lake Level from Altimetry that provides previously inaccessible information on water levels of...
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https://www.timeshighereducation.com/news/envisat-radar-altimetry-tracks-river-levels-worldwide/179463.article
Envisat radar altimetry tracks river levels worldwide | Times Higher Education (THE)
times higher educationradar altimetryriver levelsenvisattracks