While watching her handwaving argument on the webcast with Senator Vitter, I was easily able to find data contradictory to her statement in Dr. Roger Roger Pielke Jr. submitted testimony.
What the data says:
5. Floods have not increased in the US in frequency or intensity since at least 1950.
Figure 5. One measure of flood frequency from the USGS, percent of US streamguages above “bankfull streamflow.” The USGS explains: “The bankfull streamflow is defined as the highest daily mean streamflow value expected to occur, on average, once in every 2.3 years.”
Xiaodong Jian, David M. Wolock, Harry F. Lins, and Steve Brady, Streamflow of 2012—Water Year Summary, U.S. Geological Survey, Reston, Virginia, May 2013.
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