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The average yearly precipitation (rain, snow, sleet and hail) in Allen County is approximately 35 inches. The chart below shows average monthly precipitation , which is relatively constant throughout the year. The blue line shows the average while the pink and yellow lines show the wettest and driest year expected once in five years.
Individual storms can cause flooding, so precipitation records over many years have been analyzed to assess the probability of storms of a certain size occurring. Pricipitation probability for a single storm is generally expressed in terms of a return period, which means the expected number of years between storms of a certain size. A "5-year storm" has a 20% chance of occurring in any one year, so it is likely to occur about every five years on the average. However, it is possible for a 5-year storm to occur many years in a row or even several times in a single year. A 100-year storm has a 1% chance of occurring in any year. Expected 24 hour precipitation for Allen County for various periods is shown in the chart below.
Address:
ACPWQ
3718 New Vision Drive
Fort Wayne, IN 46845
Phone:
260-484-5848 EXT. 111
email: Currently Unavailable
URL: http://www.acwater.org