Hydrological Effects of Bounding the Venice (Italy) Industrial Harbor by a Protection Cutoff Wall: Modeling Study
Publication: Journal of Hydrologic Engineering
Volume 15, Issue 11
Abstract
To prevent erosion of polluted land and discharge of contaminated groundwater and surface water into the Venice Lagoon, a 57 km long cutoff wall has been designed by the Venice Water Authority and is currently under construction along the canal banks of the Venice, Italy industrial harbor. To predict the impact on the hydrologic regime and mitigate the related inundation hazard in the nearby urban areas, a complex three-dimensional finite-element model has been developed and implemented over the multiaquifer system down to a depth significantly larger than the wall bottom. The model is initially calibrated against the regional piezometry and then refined locally to reproduce the groundwater volume drained along a 5-km long bank of a harbor canal already bounded. Major results from the simulations show that after the wall completion the subsurface discharge into the lagoon is successfully abated by as much as 85% relative to the preexisting rate with, however, an expected 1-m increase of the water table in the inland city of Mestre, Italy thus pointing to the need for implementing a drainage trench upstream the wall to properly reduce the raised groundwater level. The model would also indicate that the shallowest aquifers may receive underground water from a large number of old deeper boreholes abandoned in the past and not properly sealed. From a more general perspective, the present study constitutes an important example where the reliable and sustainable design of a complex engineered structure bound to impact significantly on the surrounding environment can be much helped and improved by the use of advanced numerical models capable to capture the essential features of the underlying geohydrological processes.
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Acknowledgments
The study has been funded by the Venice Water Authority.
References
AGIP. (1996). “Alto Adriatico: Rapporto di sintesi (Northern Adriatic: Synthesis report).” Technical Rep., Milan, Italy.
Avci, C. B. (1994). “Evaluation of flow leakage through abandoned wells and boreholes.” Water Resour. Res., 30(9), 2565–2578.
Bear, J. (1972). Dynamics of fluids in porous media, Elsevier, New York.
Bernstein, A. G., Della Sala, S., and Pietrogrande, A. (2000). “Harbour canals of Venice Marghera: environmental problems and sediment management choices.” Proc., ETCA Workshop on Protection of European Water Resources: Contaminated Sites, Landfills, Sediments, Progress Review Publication, European Union, 15–33.
Carbognin, L., Teatini, P., Tomasin, A., and Tosi, L. (2010). “Global change and relative sea level rise at Venice: What impact in term of flooding.” Clim. Dyn., to be published.
Carminati, E., Martinelli, G., and Severi, P. (2003). “Influence of glacial cycles and tectonics on natural subsidence in the Po Plain (northern Italy): Insights from ages.” Geochem., Geophys., Geosyst., 4(10), 1082.
Caruso, M. (2007). “Una metodologia teorica, sperimentale e numerica per la previsione del bilancio idrico nei terreni superficiali non saturi (A theoretic, experimental, and numerical methodology to perform the water balance in shallow unsaturated soils.” Ph.D. thesis, Università degli Studi di Parma, Parma, Italy.
Dazzi, R., Gatto, G., Mozzi, G., Rusconi, A., and Zambon, G. (1988). Rete idrometrografica per il controllo delle pressioni di strato degli acquiferi sotterranei di Venezia e del suo entroterra, C.N.R., G.N.D.C.I., Venice, Italy, 1–13, Publ. n.130.
de Franco, et al. (2009). “Monitoring saltwater intrusion by time lapse electrical resistivity tomography: The Chioggia test site (Venice Lagoon, Italy).” J. Appl. Geophys., 69, 117–130.
Diersch, H. -J. G. (2005). FEFLOW, finite element subsurface flow and transport simulation system—Reference manual, WASY Gmbh, Berlin.
Doglioni, C. (1993). “Some remarks on the origin of foredeeps.” Tectonophysics, 228(1–2), 1–20.
El-Wahab, M. S. A., Khalifa, M. E., and Emara, N. A. (2007). “A hierarchical approach for groundwater modelling.” Proc., World Congress on Engineering and Computer Science, Newswood Limited, Hong Kong.
Gambolati, G., Gatto, P., and Freeze, R. A. (1974). “Mathematical simulation of the subsidence of Venice: 2, results.” Water Resour. Res., 10(3), 563–577.
Gasda, S. E., Bachu, S., and Celia, M. A. (2004). “Spatial characterization of the location of potentially leaky wells penetrating a deep saline aquifer in a mature sedimentary basin.” Environ. Geol., 46, 707–720.
Gatto, P., and Carbognin, L. (1981). “The lagoon of Venice: Natural environmental trend and man-induced modification.” Hydrol. Sci. Bull., 26(4), 379–391.
Hart, B. S. (1999). “Definition of subsurface stratigraphy, structure and rock properties from 3-D seisimic data.” Earth-Sci. Rev., 47, 189–218.
Li, S. -G., and Liu, Q. (2006). “A real-time, interactive steering environment for integrated ground water modeling.” Ground Water, 44, 758–763.
Li, S. -G., Liu, Q., and Afshari, S. (2006). “An object-oriented hierarchical patch dynamics paradigm (HPDP) for modeling complex groundwater systems across multiple-scales.” Environ. Modell. Software, 21, 744–749.
Marani, M., D’Alpaos, A., Lanzoni, S., Carniello, L., and Rinaldo, A. (2007). “Biologically-controlled multiple equilibria of tidal landforms and the fate of the Venice lagoon.” Geophys. Res. Lett., 34, L11402.
Mehl, S., and Hill, M. C. (2004). “Three-dimensional local grid refinement for block-centered finite-difference groundwater models using iteratively coupled shared nodes: A new method of interpolation and analysis of errors.” Adv. Water Resour., 27, 899–912.
Mehl, S., Hill, M. C., and Leake, S. A. (2006). “Comparison of local grid refinement methods for MODFLOW.” Ground Water, 44, 792–796.
Perez, H. H., Datta-Gupta, A., and Mishra, S. (2005). “The role of electrofacies, lithofacies, and hydraulic flow units in permeability predictions from well logs: A comparative analysis using classification trees.” SPE Reservoir Eval. Eng., 8, 143–155.
Reilly, T. E., and Harbaugh, A. W. (2004). “Guidelines for evaluating ground-water flow models.” USGS Scientific Investigations Rep. No. 2004-5038, U.S. Geological Survey, Reston, Va.
Teatini, P., Ferronato, M., Gambolati, G., and Gonella, M. (2006). “Groundwater pumping and land subsidence in the Emilia-Romagna coastland, Italy: Modeling the past occurrence and the future trend.” Water Resour. Res., 42, W01406.
Teatini, P., Gambolati, G., and Tosi, L. (1995). “A new 3-D non-linear model of the subsidence of Venice.” Proc., 5th Int. Symp. on Land Subsidence, Vol. 234, IAHS Publ., Wallingford, U.K., 353–361.
Ter Meer, J., Diels, L., and Rijnaarts, H. (2005). “Risk based management of contamination at megasites: Achievements at the Rotterdam and Antwerp harbour areas.” Proc., ConSoil 2005, 9th Int. FZK/TNO Conf. on Soil-Water Systems, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany, 2433–2441.
Tosi, L., Rizzetto, F., Zecchin, M., Brancolini, G., and Baradello, L. (2009). “Morphostratigraphic framework of the Venice Lagoon (Italy) by very shallow water VHRS surveys: Evidence of radical changes triggered by human-induced river diversions.” Geophys. Res. Lett., 36, L09406.
Tsang, C. (2005). “Is current hydrogeologic research addressing long-term predictions?” Ground Water, 43(3), 296–300.
Tse, K. C., and Jiao, J. J. (2008). “Estimation of submarine groundwater discharge in Plover Cove, Tolo Harbour, Hong Kong by .” Mar. Chem., 111, 160–170.
Ward, D., Buss, D., Mercer, J., and Hughes, S. (1987). “Evaluation of a groundwater corrective action at the Chem-Dyne hazardous waste site using a Telescopic Mesh Refinement modeling approach.” Water Resour. Res., 23, 603–617.
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© 2010 ASCE.
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Received: Mar 18, 2010
Accepted: Apr 28, 2010
Published online: May 4, 2010
Published in print: Nov 2010
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