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<br />RISK AND VULNERABILITY ASSESSMENT <br />Ramsey County Multijurisdictional Hazard Mitigation Plan | July 2012 4-31 <br />damages due to historic events within Ramsey County are composed primarily of backyard erosion and <br />water filled basements. <br />Research indicates that there have been 17 flood occurrences recorded for Ramsey County since 1997. <br />Statistically, Ramsey County can expect flooding every 2–5 years. This equates to a 30 percent chance of <br />flooding occurring in any given year. The county has added no new repetitive loss properties since 2006. <br />The following jurisdictions experienced flash flooding in 2011 (none of the events resulted in a <br />declaration); Arden Hills, Maplewood, New Brighton, North St. Paul, Roseville, St. Anthony, and <br />Shoreview. <br />Figure 4-3 <br />FEMA Floodways <br />