Declining water levels in Lake Powell and Lake Mead highlight the Colorado River Basin megadrought, which scientists and students conclude is driven mainly by rising temperatures and increased evapotranspiration, intensified by growing water demand in the southwest.

This recording from the Feb. 21, 2024 Data Puzzle webinar highlights the Snow in the Rockies lesson, where students analyze snowfall and snowmelt data from Colorado’s East River Watershed to consider impacts on downstream Colorado River water users.