Akademik Veri Yönetim Sistemi
RIVER RESEARCH AND APPLICATIONS, cilt.25, sa.3, ss.315-328, 2009 (SCI-Expanded)
Hydraulic data collected in the 1960s during 92 distinct floods at 35 different bridge sites in the Mississippi River Basin revealed that the water Surface profiles of these real-life cases were distinctly different from those observed in laboratory models of the comprehensive experimental studies of the 1950s by the U.S. Geological Survey (USGS) and by U.S. Bureau of Public Roads (USBPR). The laboratory-developed methods of USGS and USBPR yielded only about half of the field backwaters when applied to the comprehensive field data. In the current work, using the same field data and accepting it profile like that observed in the field, a new regression-based formula for estimating bridge backwater is proposed and compared with the methods of USGS and USBPR, which yields more accurate results than these two methods with the advantage of requiring a smaller load of arithmetic operations. Copyright (C) 2008 John Wiley & Sons, Ltd.