Mar 6, 2011
Heavy rains on the 5th brought one to two inches of rain across the western southern tier. This rainfall and runoff combined with snowmelt to push the Allegheny River into minor flood at Olean from the 6th to the 8th. Some flooding of low-lying agricultural land occurred as well as some minor flooding of roads along the river near Olean. The river crested at Olean at 10.52 feet around 5AM of the 7th.
Source: NOAA National Weather Service Storm Events Database (event 292636). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Cattaraugus County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.