Pre-Improvement Floods . . .                      PRE-IMPROVEMENT MSL 762.03 PRE-IMPROVEMENT FLOOD CATEGORIES Major Flood Stage 12 ft Moderate Flood Stage 10 ft Flood Stage 9 ft Action Stage 6.3 ft MAJOR FLOODING EVENTS BEFORE RECORD KEEPING 1874 Whiskey Run Flood 1888 April 20, 1901   DATE FT OUTCOME Monday, September 02, 1912 17.33-25 MAJOR FLOOD STAGE Wednesday, December 29, 1915 11 MODERATE FLOOD STAGE Wednesday, March 22, 1916 11.3 MODERATE FLOOD STAGE Monday, January 22, 1917 12.1 MAJOR FLOOD STAGE Thursday, February 22, 1917 11.4 MODERATE FLOOD STAGE Saturday, February 09, 1918 10.5 MODERATE FLOOD STAGE Thursday, November 27, 1919 12.3 MAJOR FLOOD STAGE Thursday, June 17, 1920 16.1 MAJOR FLOOD STAGE Monday, March 07, 1921 6.64 ACTION STAGE Thursday, September 22, 1921 11.50 MODERATE FLOOD STAGE Saturday, April 01, 1922 7.38 ACTION STAGE Saturday, April 15, 1922 7.38 ACTION STAGE Sunday, December 23, 1923 6.08 ACTION STAGE Thursday, January 03, 1924 7.01 ACTION STAGE Wednesday, January 16, 1924 9.10 FLOOD STAGE Saturday, March 29, 1924 8.00 ACTION STAGE Monday, May 12, 1924 6.27 ACTION STAGE Sunday, June 29, 1924 10.20 MODERATE FLOOD STAGE Friday, February 19, 1926 7.59 ACTION STAGE Sunday, September 05, 1926 11.30 MODERATE FLOOD STAGE Tuesday, November 16, 1926 10.80 MODERATE FLOOD STAGE Sunday, June 05, 1927 10.00 MODERATE FLOOD STAGE Thursday, November 17, 1927 10.20 MODERATE FLOOD STAGE Wednesday, December 14, 1927 7.66 ACTION STAGE Friday, December 16, 1927 8.11 ACTION STAGE Friday, June 22, 1928 12.00 MAJOR FLOOD STAGE Tuesday, March 26, 1929 12.20 MAJOR FLOOD STAGE Sunday, November 17, 1929 9.02 FLOOD STAGE Friday, April 04, 1930 10.30 MODERATE FLOOD STAGE Wednesday, March 15, 1933 11.98 MAJOR FLOOD STAGE Tuesday, March 17, 1936 13.97 MAJOR FLOOD STAGE Thursday, April 09, 1942 11.00 MODERATE FLOOD STAGE Wednesday, December 30, 1942 12.30 MAJOR FLOOD STAGE Wednesday, July 28, 1943 11.15 MODERATE FLOOD STAGE Tuesday, March 06, 1945 13.49 MAJOR FLOOD STAGE Wednesday, March 07, 1945 14.58 MAJOR FLOOD STAGE Wednesday, July 05, 1950 9.41 FLOOD STAGE Sunday, December 03, 1950 8.11 ACTION STAGE Monday, December 04, 1950 10.75 MODERATE FLOOD STAGE Monday, January 15, 1951 10.80 MODERATE FLOOD STAGE Sunday, January 27, 1952 10.33 MODERATE FLOOD STAGE Saturday, October 16, 1954 11.55 MODERATE FLOOD STAGE Friday, March 04, 1955 5.62 ACTION STAGE Saturday, March 05, 1955 6.45 ACTION STAGE Thursday, March 08, 1956 7.25 ACTION STAGE Monday, August 06, 1956 16.37 MAJOR FLOOD STAGE FLOODING EVENTS DURING IMPROVEMENTS DATE DISCHARGE OUTCOME Wednesday, April 26, 1961 5670 ACTION STAGE Tuesday, March 05, 1963 9340 FLOOD STAGE Monday, March 06, 1967 3400 ACTION STAGE Thursday, May 06, 1971 3230 ACTION STAGE Saturday, April 28, 1973 3170 ACTION STAGE * Pictures courtesy of the Carnegie Historical Society / Information compiled from the US Geological Survey and the National Weather Service.   Flood Categories & Historical Crests  |  FLOODS ... in the Chartiers Valley  |  Annual Peak Streamflow, in cubic feet per second What would have happened without improvements?  |  Top Ten Floods  |  Pre-Improvement Floods  |  Historical Facts  |  Historical Floods