September 2022 Streamflow

A tile map of the US showing streamgages by flow levels through the month of September. For each state, an area chart shows the proportion of streamgages in wet, normal, or dry conditions. Streamflow conditions are quantified using percentiles comparing the past month’s slow levels to the historic daily record for each streamgage.  

During the month of September, dry conditions were predominant at streamgages across much of the U.S., with approximately half of sites in some states (VT, NH, ME, MA, NJ, DE, NE, WA, OR, CA, OK, IA, IN) at or below the 25th percentile for most of the month. At the national scale, less than 10% of streamgages experienced wetter than normal conditions, with major storm events in Alaska, Florida, and Puerto Rico resulting in faced flood levels during September. 

View the previous month's streamflow conditions: August 2022 Streamflow | U.S. Geological Survey (usgs.gov)