The "Daily streamflow" map shows average streamflow conditions for the previous day. The map is similar in appearance to the "Real-time streamflow map" but less likely to reflect the influence of short-term events such as reservoir releases and short-duration precipitation events.

The map depicts streamflow conditions as computed at USGS streamgages. The colors represent daily streamflow compared to percentiles of historical daily streamflow for the day of the year. This map represents conditions in the context of all historical data. Only streamgages having at least 30 years of record are used.

States containing no dots indicate locations where flow data for the current day are temporarily unavailable. During winter months, some states (or parts of states) may have fewer dots than at other times of the year due to ice effects.

The data used to produce this map are provisional and have not been reviewed or edited. They may be subject to significant change.

A postscript file of this map is available.