<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The identification of the moment when direct flow ends and baseflow begins is one of the biggest challenges of hydrological cycle modeling. The objectives of this research were: to characterize the recession curves (RC) and to separate the components of the hydrograph in a compact model. The RC were extracted from time series in three subwatersheds in Mexico. An expo-linear model was adapted and fitted to the master recession curves to find the transition point of the hydrograph and separate the baseflow. The model discriminated the RC in two decreasing ratios: one linear associated to the direct flow, and one exponential linked to the baseflow. The transition point between these two flows was obtained analytically by equaling both ratios. The derivation of a model parameter allowed to find the maximum points in the hydrometric time series, which were the criterion to separate the baseflow. The application of this model is recommended in the analysis of RC with different magnitudes from the flexibility and attachment to the fundaments of exhaustion of a reservoir.</p></abstract>

The identification of the moment when direct flow ends and baseflow begins is one of the biggest challenges of hydrological cycle modeling. The objectives of this research were: to characterize the recession curves (RC) and to separate the components of the hydrograph in a compact model. The RC were extracted from time series in three subwatersheds in Mexico. An expo-linear model was adapted and fitted to the master recession curves to find the transition point of the hydrograph and separate the baseflow. The model discriminated the RC in two decreasing ratios: one linear associated to the direct flow, and one exponential linked to the baseflow. The transition point between these two flows was obtained analytically by equaling both ratios. The derivation of a model parameter allowed to find the maximum points in the hydrometric time series, which were the criterion to separate the baseflow. The application of this model is recommended in the analysis of RC with different magnitudes from the flexibility and attachment to the fundaments of exhaustion of a reservoir.

An alternative approach in hydrograph decomposition and separation of the baseflow

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The identification of the moment when direct flow ends and baseflow begins is one of the biggest challenges of hydrological cycle modeling. The objectives of...

An alternative approach in hydrograph decomposition and separation of the baseflow

Publié en ligne: 07 nov. 2017

Pages: 343 - 346

Reçu: 26 janv. 2017

Accepté: 01 juin 2017

DOI: https://doi.org/10.1515/johh-2017-0035

Mots clés
Recession curve, Groundwater discharge, Expo-linear model, Reservoir

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

An alternative approach in hydrograph decomposition and separation of the baseflow

Publié en ligne: 07 nov. 2017

Pages: 343 - 346

Reçu: 26 janv. 2017

Accepté: 01 juin 2017

DOI: https://doi.org/10.1515/johh-2017-0035

Mots clésRecession curve, Groundwater discharge, Expo-linear model, Reservoir

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
Recession curve, Groundwater discharge, Expo-linear model, Reservoir