Return period between flood stage exceedance and floods per year. Flood probability of flood stage exceedance for 1,5,10,15,20 year periods. Height above flood stage. The information has been broken up into tables and graphs. We have included an appendix with a glossary, references, assorted notes, stream names and abbreviations.
Information is also available concerning backwater floods and streamflow floods .
You can view this information by going to designated sections. Frequency of flood exceedance in each month during the period of record. Stage heights were gathered off the USGS Home Page and tallied up in a monthly fashion. This chart shows how many times each site has exceeded flood stage during the period of record. In this example, you see that Matoaca has flooded 6 times during the month of March.