Assessing flow regime alterations in a temporary river – the River Celone case study

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Title:Assessing flow regime alterations in a temporary river – the River Celone case study
Creators:
De Girolamo, Anna Maria; annamaria dot degirolamo at ba dot irsa dot cnr dot it; Water Research Institute, National Research Council, Francesco De Blasio 5, 70132 Bari, Italy.
Lo Porto, Antonio; Water Research Institute, National Research Council, Francesco De Blasio 5, 70132 Bari, Italy.
Pappagallo, Giuseppe; Water Research Institute, National Research Council, Francesco De Blasio 5, 70132 Bari, Italy.
Gallart, Francesc; Institute of Environmental Assessment and Water Research, Spanish National Research Council, Jordi Girona 18, 08034 Barcelona, Spain.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 63, 3, pp. 263-272
Uncontrolled Keywords:natural hydrological regime, temporary stream, hydrological modelling, indicators of hydrological alteration

Abstract

In this paper, we present an approach to evaluate the hydrological alterations of a temporary river. In these rivers, it is expected that anthropogenic pressures largely modify low-flow components of the flow regime with consequences for aquatic habitat and diversity in invertebrate species. First, by using a simple hydrological index (IARI) river segments of the Celone stream (southern Italy) whose hydrological regime is significantly influenced by anthropogenic activities have been identified. Hydrological alteration has been further classified through the analysis of two metrics: the degree (Mf) and the predictability of dry flow conditions (Sd6). Measured streamflow data were used to calculate the metrics in present conditions (impacted). Given the lack of data from pristine conditions, simulated streamflow time series were used to calculate the metrics in reference conditions. The Soil and Water Assessment Tool (SWAT) model was used to estimate daily natural streamflow. Hydrological alterations associated with water abstractions, point discharges and the presence of a reservoir were assessed by comparing the metrics (Mf, Sd6) before and after the impacts. The results show that the hydrological regime of the river segment located in the upper part of the basin is slightly altered, while the regime of the river segment downstream of the reservoir is heavily altered. This approach is intended for use with ecological metrics in defining the water quality status and in planning streamflow management activities.

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Title:Assessing flow regime alterations in a temporary river – the River Celone case study
Translated title:Assessing flow regime alterations in a temporary river – the River Celone case study
Creators:
De Girolamo, Anna Maria; annamaria dot degirolamo at ba dot irsa dot cnr dot it; Water Research Institute, National Research Council, Francesco De Blasio 5, 70132 Bari, Italy.
Lo Porto, Antonio; Water Research Institute, National Research Council, Francesco De Blasio 5, 70132 Bari, Italy.
Pappagallo, Giuseppe; Water Research Institute, National Research Council, Francesco De Blasio 5, 70132 Bari, Italy.
Gallart, Francesc; Institute of Environmental Assessment and Water Research, Spanish National Research Council, Jordi Girona 18, 08034 Barcelona, Spain.
Uncontrolled Keywords:natural hydrological regime, temporary stream, hydrological modelling, indicators of hydrological alteration
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:63
Number:3
Page Range:pp. 263-272
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8528
Item Type:Article
Deposited On:17 Dec 2015 12:39
Last Modified:17 Dec 2015 11:39

Citation

De Girolamo, Anna Maria; Lo Porto, Antonio; Pappagallo, Giuseppe; Gallart, Francesc (2015) Assessing flow regime alterations in a temporary river – the River Celone case study. Journal of Hydrology and Hydromechanics, 63 (3). pp. 263-272. ISSN 0042-790X

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