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Floods of the White River and Killbuck Creek are caused by runoff from general, and/or intense rainfall. Other areas of flooding concern are from the Boland Ditch and Pittsford Ditch. Although floodwaters are not as deep, they still cover streets and yards and can flood cars, garages, basements and lower floors.
Flooding usually occurs during the winter and spring; however, floods have occurred during all seasons of the year and may occur with little or no warning.
Flood flow stages on the White River can rise from normal flow to flood peaks from 24 to 42 hours with channel velocities ranging from 6 to 12 ft. per second. Flood stage in Anderson is 10 ft., with base elevation being 825.02 ft. mean sea level – 1929 General Datum. The U.S. Geological Survey maintains the official gauging site, located on the west bank of the White River, near the old Tenth Street Bridge abutment.
Click here for Real-time River Information
Properties along these streams range from residential, commercial to industrial, each of which have been severely damaged by the floods of 1913 and 1964. Although large floods have occurred as recent as the July and September 2003 events, studies indicate that larger floods are possible.
Your property may be high enough that it was not flooded recently. However, it can still be flooded in the future because the next flood could be worse. If you are in the floodplain, the odds are that someday your property will be damaged.
White River begins to overflow its banks at approximately 10 ft.
Standard Project Flood – in channel 12 ft. per second - over bank areas 5 ft. per second
The levee that runs along the east bank of the White River from the entrance to Edgewater Park north to the Truman Bridge was recently re-built using city and federal funds. The new levee was completed in 2016, with certification effective March 15, 2019. The elevation of the levee is 842 ft.
Flood flow stages on the White River can rise from normal flow to flood peaks in 24 to 42 hours with channel velocities ranging from 6 to 12 ft. per second. Key Flood Activities
|12 ft.||Close off Edgewater Park|
|13 ft.||Close off Grand Avenue between Alexandria Pike & Broadway|
Notify residents along Short Hazlett, 1st Street & Madison Avenue, 2nd Street & Sycamore Street, and Riverside Drive to prepare for sandbag operations and to make preparations for possible evacuation.
|14 ft.||Manhole at Athletic Park behind pool starts to overflow|
Killbuck Creek begins to overflow into Aqua Gardens / Shadyside Lake – close off walking paths around lakes
|15 ft.||Water will be into Derby Downs off Madison Avenue|
Water starts approaching 1st Street & Henry Street and the areas of Irondale & Riverside Drive
|17 ft.||Water from Killbuck Creek and Aqua Gardens / Shadyside Lake will be near Alexandria Pike|
|17.5 ft.||Notify residents in / along the following areas to make preparations for evacuation:|
Close Cross Street between Alexandria Pike & State Street
Floodwaters will start to fill into Phar-Mor lot
Water Pollution Control – Dewey Street Plant is affected by floodwaters
Athletic Park begins to fill
|18.5 ft.||Close Alexandria Pike between Cross Street & Lindberg Road|
|19 ft.||Water will start overflowing the levee along 10thStreet|
Close 8th Street from the top of the Eisenhower Bridge to Park Avenue
Hollywood Estates will begin being affected by floodwaters
Close Main Street between 5th Street & Milton Avenue
Expect levee in Park Place to fail
Careful watch of all bridges will need to be conducted
Many roads will be impassible
Bridges may be impassible or not safe for vehicular traffic
Most of the northeast and northwest portions of the city will be under water
Evacuations of the following areas should have occurred:
Floods of the same or larger magnitude as those that have occurred in the past could occur in the future. The Army Corp of Engineers has run models with similar geographical and physiographical characteristics to determine the flooding potential. The models considered storms and floods that have occurred in regions of like topography, watershed cover and physical characteristics. These models have shown with the combination of the most adverse meteorological conditions over the basin, rainfall in excess of any that has been recorded is possible.
Various discussions of future floods have been mentioned as Intermediate Regional Flood and the Standard Project Flood.
The Intermediate Regional Flood is defined as one that could occur once in 100 years, on the average, although it could occur in any year. Or, a one percent chance of occurring in any given year, known as the 100 year flood.
The Standard Project Flood is defined as a major flood that can be expected to occur from a severe combination of meteorological and hydrological conditions that is considered reasonably characteristic of the geographical area. This is also known as the 500 year flood.