Current Streamflow Maps

These state maps from USGS show the current (actually the previous day’s) daily streamflow compared to historical streamflows for that gage for day of the year. The color of the circle indicates the percentile ranking of the current daily streamflow among the distribution of historic daily streamflows; see the key below the map thumbnail images. “Low” (red) means the current flow is the record low for that date, while “High” (black) means that the current flow is the record high for that date. The open circles indicate gages that are reporting current flows, but don’t have sufficiently long historic records to be given a percentile ranking.
To access the current flow data for each gage shown on the map, click the “Current Streamflow – XX” header above each thumbnail map, then when that page from USGS loads, mouse-over the gage of interest.

Additional streamflow maps are available from USGS here.