NRCS Monthly Maps and Data

(Snowpack, Precipitation, Reservoir Storage and Streamflow Forecasts)

All maps shown below are interactive. Water users can select individual basins to view the basin totals, view sites used in the calculations, and can download this information for their personal use. In addition to the basin data, map users can also select individual SNOTEL sites, snowcourses, reservoirs and streamflow points to view information related to the metric selected in the menu bar.  

Monthly Streamflow Forecasts - Graphical Format

Volumetric Streamflow Forecasts for the spring and summer are issued monthly between March 1st and June 1st for streamgages in Montana. Forecasts will be issued by the fifth business day of each month and will be available for access in the chart tool below.