Empirical Flow Parameters - A Tool for Hydraulic Model Validity Assessment

Data in Texas from the U.S. Geological Survey (USGS) physical stream flow and channel property measurements for gaging stations in the state of Texas were used to construct relations between observed stream flow, topographic slope, mean section velocity, and several other hydraulic factors, to produce three methods to assess "if hydraulic model results are way off." A generalized additive modeling technique was used to develop two equations, QGAM and VGAM, that estimate discharge and velocity at a location in Texas from a cross sectional flow area, topwidth, location (latitude and longitude), and mean annual precipitation. The data were also analyzed to develop conditional distributions of hydraulic parameters based on location related values to extend the utility of the QGAM and VGAM models. The data and ancillary properties developed in the research were used to develop dimensionless bankfull depth-discharge and similar charts as a way to evaluate anticipated behavior in streams in Texas.

• Record URL:
  • http://www.depts.ttu.edu/techmrtweb/reports/complete_reports/0-6654-1_Final.pdf
• 
• Supplemental Notes:
  • Cover title: May 2014
• Corporate Authors:

  Texas Tech University, Lubbock

  Water Resources Center, 10th and Akron
  Lubbock, TX  United States  79409-1022

  Texas Tech University, Lubbock

  Center for Multidisciplinary Research in Transportation
  P.O. Box 41023
  Lubbock, TX  United States  79409-1023

  Texas Department of Transportation

  Research and Technology Implementation Office, P.O. Box 5080
  Austin, TX  United States  78763-5080

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Cleveland, Theodore G
  • Strom, Kyle B
  • Sharif, Hatim
  • Liu, Xiaofeng
• Publication Date: 2013-8

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; References; Tables;
• Pagination: 171p

Subject/Index Terms

• TRT Terms: Hydraulics; Hydrology; Mathematical models; Sediment discharge; Streamflow; Validation; Velocity
• Geographic Terms: Texas
• Subject Areas: Highways; Hydraulics and Hydrology; Planning and Forecasting; I26: Water Run-off - Freeze-thaw; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01561584
• Record Type: Publication
• Report/Paper Numbers: FHWA/TX-14/0-6654-1, 0-6654-1
• Contract Numbers: 0-6654
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Apr 27 2015 9:54AM