Skip to content

Stage-Discharge Rating Curves Revisited

by A.R. Schmidt, B.C. YEN
HMEM 2002 ()
Get full text at journal


Stage-discharge ratings, along with a variety of empirical corrections for the non-unique relations between stage and discharge have been used for nearly a century. None of these approaches has proven consistently successful in general application because of simplifying assumptions to the momentum and continuity equations. The reference condition for these methods has been poorly defined, often leading to a non-unique reference condition. Furthermore, the assumption of uniform progressive flow underlying many methods is possible only for some waves in prismatic channels over a steady, uniform initial condition. In general, downstream backwater, along with the characteristics of the flood wave, can significantly affect both the velocity and attenuation of the flood wave, resulting in significant and varying errors in methods such as the Jones method. An alternative approach is to develop ratings theoretically, omitting relatively negligible terms from the momentum equation to approximate the dynamics of flow independent from characteristics of the flood wave.

Cite this document (BETA)

Readership Statistics

11 Readers on Mendeley
by Discipline
36% Engineering
36% Earth and Planetary Sciences
27% Environmental Science
by Academic Status
36% Researcher
18% Student > Ph. D. Student
18% Other
by Country
9% United Kingdom
9% United States

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in