May 1 & 2, 2010, Epic Flood Event for Western and Middle Tennessee
NOAA: Information Updated 05/18/2010
What is a 100-year flood? A 100-year flood is an event that statistically has a 1% chance of occurring in any given year. A 500-year flood has a 0.2% chance of occurring, and a 1,000-year flood has a 0.1% chance of occurring.
The map below relates to amount of rainfall that fell to the chances of that amount of rain actually occurring.
The map below relates to amount of rainfall that fell to the chances of that amount of rain actually occurring.
| Record or Near Record River Flood Levels Across Middle Tennessee | ||||
| Location | Record | Old Record | Date of Old Record | Flood Stage |
| Cumberland at Clarksville | 62.58' | 57.1' | March 14, 1975 | 46' |
| Cumberland at Nashville | 51.86' | 47.6' | March 15, 1975 | 40' |
| Red River near Port Royal | 49.48' | 48.3' | March 13, 1973 | 30' |
| Duck River at Centerville | 47.5' | 37.6' | February 14, 1948 | 22' |
| Harpeth River near Kingston Springs | 38' | 33.2' | January 7, 1946 | 20' |
| Duck River near Hurricane Mills | 33' | 30.7' | February 14, 1948 | 24' |
| Harpeth River at Bellevue | 33' | 24.3' | February 13, 1948 | 20' |
| Buffalo River near Lobelville | 25.7' | 25.2' | May 28, 1991 | 14' |
| Harpeth River at Franklin | 35.1* | 35.2 | February 13, 1968 | 30' |
| * NEAR RECORD | ||||
| 12 Highest Rainfall Totals - COOP and CoCoRaHS Observers | |
| Location | Total Two Day Rainfall |
| Camden 4.5 NE | 19.41" |
| Fairview 3.8 SW | 18.04" |
| Fairview 2.9 SW | 17.71" |
| Belle Meade 1.4 NNE | 17.67" |
| Mt Moriah Birdsong Marina | 17.51" |
| Brownsville 1.0 SE | 17.5" |
| Jackson 4.9 NW | 17.36" |
| Brentwood 2.5 NE | 17.15" |
| Bon Aqua 3.0 ESE | 17.09" |
| Brentwood 2.8 NE | 17.07" |
| Belle Meade 1.2 ESE | 17.02" |
Flooding Facts:
- Fifteen (15) observation sites had rainfall measurements exceeding the maximum observed rainfall associated with Hurricane Katrina landfall.
- The two day rainfall of 13.57 inches at Nashville International Airport shattered the monthly rainfall record for May which was 11.04 inches.
- The rainiest month in Nashville is 13.92 inches in January 1950.
- Nashville International Airport experienced its 1st and 3rd rainiest days on back to back days.
- The heaviest rainfall occurred in a swath across Davidson, Williamson, Dickson, Hickman, Benton, Perry, and Humphreys Counties. An average of 14-15 inches of rain fell, equivalent to 420 billion gallons of water, in just two days.
Comparison to Hurricane Katrina Total Rainfall Amounts
Here are additional links to information pertaining to May 2010 Epic Flood Event.
- TN Weekend Rainfall Totals Map
- Middle TN Weekend Rainfall Totals Map
- Gage Adjusted Radar Rainfall Estimates
- Epic Flood Event of May 2010 - Record or Near-Record River Flood Levels Across Middle Tennessee
- Historic Rain Event Breaks Many Nashville Records
- Flood of May 2010
- Record Crests on the Cumberland River at Nashville
- Epic Nature of May 1st -2nd 2010
- Nashville's Rainfall for Saturday and Sunday May1,2,2010
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