University of Central Florida Civil and Environmental Engineering CWR4101 Hydrology Lecture 7 - Flow Measurements

The student should have the ability to;

• Define the following terms;
  • Stage
  • Isovel
  • Weir
  • Invert
• Describe various methods of measuring stage.
• Describe both structural and non-structural methods of measuring discharge in a channel.
• Use stream velocity measurements to give an estimate of discharge.
• Use Manning's equation to estimate both velocity and flowrate in a channel.
• Calculate discharge using equations for the following weirs;
  • Broad Crested Rectangular Weir - with or without side contractions.
  • Sharp Crested Rectangular Weir - with or without side contractions.
  • V-Notch weirs (various angles)
  • Orifice (both open and submerged)
  • Parshall flumes
  • Combination of above weirs
• Use regression methods to develop a relationship between stage and discharge for channel or stream data.
• Define or describe the following weir related terms;
  • Broad Crested vs. Flat Crested vs. Sharp Crested
  • Contracted vs. Suppressed vs Cipollete
  • Diverting vs. Leaping vs. Draw Door
  • Influent vs. Effluent
  • Free vs. Submerged
  • Trapezoidal vs. Rectangular vs. Parabolic vs. V-Notch vs. Triangular vs. Irregular
• Describe how stream gaging networks are used and maintained in the United States and what agency has the responsibilty for monitoring and maintaining these gaging networks.

• Wanielista - Chapter 7
• Viesmann and Lewis - Chapter
• Singh - Chapters
• Ponce
• Linsley, Kohler, and Paulhus

• In-Class Lecture 7
• Example V-Notch Weir
• Example Parshall Flume
• The world's most southerly weir (in Antarctica)
• USBR West Coast Dams

Chapter 7

• Section 7.5.1 all