← your water story · water year 2026
The detailed, reservoir-by-reservoir map, best on a big screen. Reservoirs are glasses of water, rivers are ribbons of color, and the Continental Divide runs down the middle. For the guided overview, start from the seven-basin story. On a phone, the Flow & mixing view shows how a basin's water steps down. Or watch the 2026 drought arrive.
Each reservoir is a glass whose area is its total capacity, wide at the rim and narrow at the base, the way a canyon reservoir holds water. Fill color is the water's source. The level is filled by area, so a half-full glass holds half its capacity. Click any glass for its percent of normal and the rest of its detail.
Colors repeat only between rivers that can never mix, so within any one river every color is unique and a blend is always traceable. Map rivers use the same hues, and mainstems fade toward the blend of everything they have collected. Braid mode on the flow view splits every ribbon into its source shares.
Want the numbers themselves? The full dataset is on the data page as downloadable CSVs.