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Resistance Partitioning of Headwater Mountain Streams A Case Study in Southern Ecuador

  • Sebastián Cedillo
  • , Luis Timbe
  • , Esteban Samaniego
  • , Andrés Alvarado

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Resistance partitioning is a standard method to divide total resistance into linear additive components. Nevertheless, in mountain rivers the consideration of linearity is questionable. This article analyses the resistance partitioning on five reaches with typical mountain river morphologies (three cascades and two step-pools) in the Quinoas River in southern Ecuador through the calibration of two equations: The calibrated Keulegan and another nondimensional hydraulic geometry equation calibrated with resistance measured in a plain bed. Each studied reach was divided into three to five cross sections to take geometric and hydraulic data for six months for a wide range of flows magnitudes. The calibrated Keulegan equation provides the best results based on the values presented in the literature, the calibrated nondimensional hydraulic geometry equation produces different values probably due to the presence of vegetation in the banks of the plain-bed reach.

Original languageEnglish
Title of host publicationWorld Environmental and Water Resources Congress 2020
Subtitle of host publicationHydraulics, Waterways, and Water Distribution Systems Analysis - Selected Papers from the Proceedings of the World Environmental and Water Resources Congress 2020
EditorsSajjad Ahmad, Regan Murray
PublisherAmerican Society of Civil Engineers (ASCE)
Pages183-194
Number of pages12
ISBN (Electronic)9780784482971
DOIs
StatePublished - 2020
EventWorld Environmental and Water Resources Congress 2020: Hydraulics, Waterways, and Water Distribution Systems Analysis - Henderson, United States
Duration: 17 May 202021 May 2020

Publication series

NameWorld Environmental and Water Resources Congress 2020: Hydraulics, Waterways, and Water Distribution Systems Analysis - Selected Papers from the Proceedings of the World Environmental and Water Resources Congress 2020

Conference

ConferenceWorld Environmental and Water Resources Congress 2020: Hydraulics, Waterways, and Water Distribution Systems Analysis
Country/TerritoryUnited States
CityHenderson
Period17/05/2021/05/20

Keywords

  • Resistance partitioning
  • headwaters
  • mountain rivers

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