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Supply Data & Reports

Denver Water diligently collects and analyzes data from throughout our system to help us better understand where our water supply and demand stand.

Daily raw water updates

Denver Water collects readings at diversions and reservoirs throughout the system and provides daily updates year-round. The data reflect average conditions over the course of 24 hours at reporting locations. All data are preliminary and subject to change. For additional data needs, contact Raw Water Supply.

  • Reservoir Operations: Readings taken at stream gages and reservoirs in Denver Water's collection system.
    • Diversions: Water diversions at different tunnels, canals and ditches in Denver Water's South Platte and Moffat collection systems. The amount of water Denver Water diverts affects streamflow rates throughout the watershed.


    Streamflow is how much water, in cubic feet per second, is flowing at different locations along the South Platte and Colorado rivers. Streamflow rates depend on natural flow levels, Denver Water’s diversions and others’ diversions into reservoirs, tunnels, canals and ditches.

    The Colorado Division of Water Resources and the U.S. Geological Survey provide current information from these stream gages.

    South Platte River
    South Platte Below Antero Reservoir
    South Platte above Eleven Mile Reservoir
    South Platte near Lake George
    South Platte above Cheesman Reservoir
    South Platte below Cheesman Reservoir
    North Fork South Platte River at Grant
    South Platte River at South Platte
    South Platte below Strontia Springs Reservoir
    South Platte River at Waterton
    South Platte below Chatfield Reservoir
    South Platte River at Denver
    Burlington Ditch Diversion
    South Platte River at Henderson
    South Platte River near Kersey
    South Platte River at Julesburg
    Bear Creek at Morrison
    Colorado River
    Colorado River Near Granby, CO
    Colorado River at Hot Sulphur Springs
    Colorado River near Parshall
    Colorado River near Kremmling
    Colorado River at Dotsero
    Colorado River at Cameo
    Eagle River at Gypsum

    For current information from stream gages throughout the entire state, check with the Colorado Division of Water Resources.

    Water Watch Report

    The Water Watch Report is a summary of water supply and demand conditions (e.g., reservoir supply, snowpack and precipitation) prepared for Denver’s Board of Water Commissioners. During the winter, the report is updated the Monday before Board meetings, which are normally the second and fourth Wednesdays of the month. During the watering/irrigation season, it is updated weekly.

    Weather data

    On a daily basis, Denver Water provides weather reporting and data with information on conditions such as temperature, rainfall and evapotranspiration.