| Abstract | Hydrological regime alterations may strongly influence river morphology, water quality, and river ecosystem. The present paper aimed to define an integrated modelling framework for analysing the hydrological regime alterations induced by point sources (PSs) discharges in data-limited regions through two case studies: the Canale d'Aiedda (Italy) and Nil wadi (Algeria). Long time series of daily streamflow in un-impacted and impacted (PSs discharges) conditions were generated by applying the Soil and Water Assessment Tool model and the hydrological regime was characterised by using several hydrological indicators. Flow regime alterations due to PSs were assessed with the range of variability approach. Results showed that the PSs induced alterations of some flow regime components (magnitude, duration, and timing). Hydrological regime classification of the river reaches receiving wastewaters from PSs shifted from intermittent to perennial. All the components of the low flow (1-, 3-, 7-, 30-, and 90-day minimum flow, zero-days) and the monthly flow recorded in summer were severely altered. Minor hydrological alterations were assessed for high flow components (1-, 3-, 7-, 30-, and 90-day maximum flow) and mean monthly flow in the wet period. The timing of minimum flow was found to shift later in the year. This study may support river ecologists in the ecological status evaluation. |
| Text | 471322 2022 10.4081/jae.2022.1333 Scopus 2 s2.0 85135483042 Flow regime alterations; temporary rivers; hydrological indicators; SWAT model; un gauged basins. Evaluating flow regime alterations due to point sources in intermittent rivers A modelling approach Ricci G.F.; Zahi F.; D ambrosio E.; De Girolamo A.M.; Parete G.; Debieche T. H.; Gentile F. Department of Agricultural and Environmental Sciences, University of Bari Aldo Moro, Bari, Department of Agricultural and Environmental Sciences, University of Bari Aldo Moro, Bari, Italy;, , Italy; Geological Engineering Laboratory, University of Mohamed Seddik Benyahia, Jijel, Geological Engineering Laboratory, University of Mohamed Seddik Benyahia, Jijel, Algeria;, , Algeria; Water Research Institute, National Research Council, Bari, Water Research Institute, National Research Council, Bari, Italy, , , Italy; Water Research Institute, National Research Council, Bari, Water Research Institute, National Research Council, Bari, Italy, , , Italy Hydrological regime alterations may strongly influence river morphology, water quality, and river ecosystem. The present paper aimed to define an integrated modelling framework for analysing the hydrological regime alterations induced by point sources PSs discharges in data limited regions through two case studies the Canale d Aiedda Italy and Nil wadi Algeria . Long time series of daily streamflow in un impacted and impacted PSs discharges conditions were generated by applying the Soil and Water Assessment Tool model and the hydrological regime was characterised by using several hydrological indicators. Flow regime alterations due to PSs were assessed with the range of variability approach. Results showed that the PSs induced alterations of some flow regime components magnitude, duration, and timing . Hydrological regime classification of the river reaches receiving wastewaters from PSs shifted from intermittent to perennial. All the components of the low flow 1 , 3 , 7 , 30 , and 90 day minimum flow, zero days and the monthly flow recorded in summer were severely altered. Minor hydrological alterations were assessed for high flow components 1 , 3 , 7 , 30 , and 90 day maximum flow and mean monthly flow in the wet period. The timing of minimum flow was found to shift later in the year. This study may support river ecologists in the ecological status evaluation. 53 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85135483042 origin=inward Evaluating flow regime alterations due to point sources in intermittent rivers A modelling approach 10.4081_jae.2022.1333.pdf Articolo in rivista ETS 1974 7071 Journal of agricultural engineering Pisa Journal of agricultural engineering Pisa J. agric. eng. Pisa Journal of agricultural engineering. Pisa Rivista di ingegneria agraria Pisa annamaria.degirolamo DE GIROLAMO ANNA MARIA |
