title: Experimental assessment of level pool routing in preliminary design of floodplain storage.
abstract: Among control structures in flood management, floodplain storage represents one of the most effective measures, since it holds part of flood volume in a delimited area thus reducing the peak discharge. Sizing of floodplain storage, both on-stream and off-stream, is complex and several methodologies for preliminary design are available in literature, almost all assuming level pool reservoir routing, i.e. the water level in the floodplain is horizontal during the storage filling. Few studies examine the accuracy of that assumption. The present paper work reports an extensive experimental investigation to assess the reliability of level pool routing in the design of on-stream floodplain storages. The good agreement between numerical and experimental values during the filling phase confirmed the reliability of the hypothesis in the preliminary sizing of on-stream floodplain storage. In contrast, even significant differences can be shown during the floodplain draining, due to vegetation and bottom irregularities.
authors.affiliation: Dept. of Hydraulic, Geotechnical and Environmental Engineering, University of Naples Federico II, via Claudio 21, 80125, Napoli, Italy. giudemar@unina.it
authors.forename: Giuseppe
authors.initials: G
authors.lastname: De Martino
authors.forename: Francesco
authors.initials: F
authors.lastname: De Paola
authors.forename: Nicola
authors.initials: N
authors.lastname: Fontana
authors.forename: Gustavo
authors.initials: G
authors.lastname: Marini
authors.forename: Antonio
authors.initials: A
authors.lastname: Ranucci
mesh_terms: D004190:Disasters / Q000517:prevention & control*; D004777:Environment; D005069:Evaluation Studies as Topic; D055868:Floods; D005843:Geography; D008962:Models, Theoretical; D014872:Water Movements