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Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology

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Proc. IAHS, 364, 333-338, 2014
http://www.proc-iahs.net/364/333/2014/
doi:10.5194/piahs-364-333-2014
© Author(s) 2014. This work is distributed
under the Creative Commons Attribution 3.0 License.
 
16 Sep 2014
Hydrogeological characterization of peculiar Apenninic springs
F. Cervi1, M. Marcaccio2, F. Petronici1, and L. Borgatti1 1DICAM Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali ALMA MATER STUDIORUM Università di Bologna, Bologna, Italy
2ARPA Emilia-Romagna Direzione Tecnica – Area Monitoraggio e Reporting Ambientale, Bologna, Italy
Keywords: Groundwater, discharge monitoring, hydrogeological balance, northern Apennines, Italy Abstract. In the northern Apennines of Italy, springs are quite widespread over the slopes. Due to the outcropping of low-permeability geologic units, they are generally characterized by low-yield capacities and high discharge variability during the hydrologic year. In addition, low-flow periods (discharge lower than 1 Ls-1) reflect rainfall and snowmelt distribution and generally occur in summer seasons. These features strongly condition the management for water-supply purposes, making it particularly complex. The "Mulino delle Vene" springs (420 m a.s.l., Reggio Emilia Province, Italy) are one of the largest in the Apennines for mean annual discharge and dynamic storage and are considered as the main water resource in the area. They flow out from several joints and fractures at the bottom of an arenite rock mass outcrop in the vicinity of the Tresinaro River. To date, these springs have not yet been exploited, as the knowledge about the hydrogeological characteristics of the aquifer and their hydrological behaviour is not fully achieved. This study aims to describe the recharge processes and to define the hydrogeological boundaries of the aquifer. It is based on river and spring discharge monitoring and groundwater balance assessment carried out during the period 2012–2013. Results confirm the effectiveness of the approach, as it allowed the total aliquot of discharge of the springs to be assessed. Moreover, by comparing the observed discharge volume with the one calculated with the groundwater balance, the aquifer has been identified with the arenite slab (mean altitude of 580 m a.s.l.), extended about 5.5 km2 and located 1 km west of the monitored springs.

Citation: Cervi, F., Marcaccio, M., Petronici, F., and Borgatti, L.: Hydrogeological characterization of peculiar Apenninic springs, Proc. IAHS, 364, 333-338, doi:10.5194/piahs-364-333-2014, 2014.
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